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This diagram shows a hand gesture that represents a resignation.

Resignation

This diagram shows a hand gesture that represents a resignation.

"As additional instruction, the men may be permitted to wield the rifle left handed, that is on the left side of the body, left hand at the small of the stock. Many men will be able to use this method to advantage. It is also of value in case the left hand is wounded." — Moss, 1914

Left-Handed Rifle

"As additional instruction, the men may be permitted to wield the rifle left handed, that is on the…

"Right hand rule to determine the direction of magnetic field around a conductor carrying a current. The thumb of the right hand is placed along the conductor, pointing in the direction in which the current is flowing, then...the finger tips will point in the direction of the magnetic whirls." -Hawkins, 1917

Right Hang Rule

"Right hand rule to determine the direction of magnetic field around a conductor carrying a current.…

"Right hand palm rule to determine the direction of the magnetic field around a conductor carrying a current." -Hawkins, 1917

Right Hand Rule

"Right hand palm rule to determine the direction of the magnetic field around a conductor carrying a…

"A rule for direction of induced current which in some cases, is more conveniently applied than Fleming's rule." -Hawkins, 1917

Right Hand Rule

"A rule for direction of induced current which in some cases, is more conveniently applied than Fleming's…

"Fleming's rule for direction of induced current. Extend the thumb, forefinger and middle finger of the right hand [as shown]. Place the hand [so that] the thumb will point in the direction in which the conductor moves, the forefinger in the direction of the lines of force (N to S), then will the middle finger point in the direction in which the induced current flows." -Hawkins, 1917

Right Hand Rule of Induced Current

"Fleming's rule for direction of induced current. Extend the thumb, forefinger and middle finger of…

"The palm rule for direction of induced current: If the palm of the right hand be held against the direction of the lines of force, the thumb in the direction of the motion, then the fingers will point in the direction of the induced current." -Hawkins, 1917

Right Hand Rule, Palm

"The palm rule for direction of induced current: If the palm of the right hand be held against the direction…

"Right hand rule for polarity of a solenoid: If the solenoid be grasped in the right hand, so that the fingers point in the direction in which the current is flowing in the wires, the thumb extended will point in the direction of the north pole [of the solenoid]." Hawkins, 1917

Right Hand Rule, Solenoid

"Right hand rule for polarity of a solenoid: If the solenoid be grasped in the right hand, so that the…

One-handed Sign for S.

S

One-handed Sign for S.

Two-handed Sign for S.

S

Two-handed Sign for S.

"Improvised Hand Seats: the Three-Handed Seat. THe usefull three-handed seat is made by one bearer grasping the free wrist of the other bearer and placing his free hand on his partner's shoulder, in order to support the patient's back." — Blaisedell, 1904

Hand seat

"Improvised Hand Seats: the Three-Handed Seat. THe usefull three-handed seat is made by one bearer grasping…

"Showing how the Improvised Three-Handed Seat may be used to carry an Injured Person. The picture also shows how a boy's broken leg may be treated with an improvised apparatus made of pieces of oak bark for splints, padded with graass and held in place by two pocket handkerchiefs." — Blaisedell, 1904

Hand seat

"Showing how the Improvised Three-Handed Seat may be used to carry an Injured Person. The picture also…

"The ordinary sheet-metal shears merely resemble very powerful scissors, and, their action being quite local, they serve well for dividing the plates or other thin sheets for which alone they are suitable." — Encyclopedia Britannica, 1893

Sheet-metal Shears

"The ordinary sheet-metal shears merely resemble very powerful scissors, and, their action being quite…

"The shipwright's axe." — Encyclopedia Britannica, 1893

Shipwrights Axe

"The shipwright's axe." — Encyclopedia Britannica, 1893

This diagram shows a hand gesture that represents a simple affirmation.

Simple Affirmation

This diagram shows a hand gesture that represents a simple affirmation.

The skeletal hand of a human.

Skeletal Hand

The skeletal hand of a human.

"A Layer of the Outer Skin from the Palm of the Hand. Detached by maceration." — Blaisedell, 1904

Outer skin

"A Layer of the Outer Skin from the Palm of the Hand. Detached by maceration." — Blaisedell, 1904

"1. A drag or dray without wheels, but mounted on runners, for the conveyance of loads over frozen snow or ice, or over mud or the bare ground, as in transporting logs and heavy stones. Also sledge. 2. A pair of runners connected by a framework, used (sometimes with another pair) to carry loads or support the body of a vehicle, or, when of lighter build and supporting a light platform or seat, in the sport of coasting and for drawing light loads by hand." &mdash;Whitney, 1889 <p>Illustration of a hand sled with a platform atop it and a rope with which to be pulled by a human or animal. Traditionally, these are not meant to be ridden, but used to convey materials.

Hand Sled or Sledge

"1. A drag or dray without wheels, but mounted on runners, for the conveyance of loads over frozen snow…

"A pair of runners connected by a framework, used (sometimes with another pair) to carry loads or support the body of a vehicle, or, when of lighter build and supporting a light platform or seat, in the sport of coasting and for drawing light loads by hand." &mdash;Whitney, 1889 <p>This illustration is of a hand sled. Unlike bobsleds, these sleds are not meant to be ridden. Instead, they are pulled by a person or animal, using the rope. The sleds transport materials.

Hand Sled

"A pair of runners connected by a framework, used (sometimes with another pair) to carry loads or support…

"The smoothing plane." &mdash; Encyclopedia Britannica, 1893

Smoothing Plane

"The smoothing plane." — Encyclopedia Britannica, 1893

A hand holding a solenoid.

Solenoid

A hand holding a solenoid.

"The spoke-shave affords a good example of what has just been said as to the result obtainable by a well-directed effort towards the improvement of an old estrablished hand tool." &mdash; Encyclopedia Britannica, 1893

Spoke-shave

"The spoke-shave affords a good example of what has just been said as to the result obtainable by a…

"Extend the arm horizontally toward the platoon leader; swing the hand up and down from the wrist." &mdash; Moss, 1914

Squad

"Extend the arm horizontally toward the platoon leader; swing the hand up and down from the wrist."…

A hand with bar demonstrating the attractive properties of static electricity.

Demonstration of Static Electricity

A hand with bar demonstrating the attractive properties of static electricity.

A hand with a rod, demonstrating the attractive properties of static electricity.

Demonstration of Static Electricity

A hand with a rod, demonstrating the attractive properties of static electricity.

"Steam Hammer." &mdash; Encyclopedia Britannica, 1893

Steam Hammer

"Steam Hammer." — Encyclopedia Britannica, 1893

"The wood-worker's main stand-by for boring is the stock or brace and set of bits." &mdash; Encyclopedia Britannica, 1893

Stock

"The wood-worker's main stand-by for boring is the stock or brace and set of bits." — Encyclopedia…

A stock used to tighten and loosen bolts.

Stock

A stock used to tighten and loosen bolts.

This diagram shows a hand gesture that represents supplication.

Supplication

This diagram shows a hand gesture that represents supplication.

One-handed Sign for T.

T

One-handed Sign for T.

Two-handed Sign for T.

T

Two-handed Sign for T.

"The ordinary tail-vice used by mechanics has not yet been largely superseded, though many ingenious arrangements have been devised for remedying its main defect." &mdash; Encyclopedia Britannica, 1893

Tail-vice

"The ordinary tail-vice used by mechanics has not yet been largely superseded, though many ingenious…

Telegraph key invented by Samuel Morse with improvements by Alfred Vail.

Telegraph Key

Telegraph key invented by Samuel Morse with improvements by Alfred Vail.

The tendons reach only to the wrist. Fine cords pass to the fingers.

Tendons of the Arm

The tendons reach only to the wrist. Fine cords pass to the fingers.

A hand giving a thumbs down.

Thumbs Down

A hand giving a thumbs down.

A hand expressing the negation of a situation with a 'thumbs down'.

Thumbs down

A hand expressing the negation of a situation with a 'thumbs down'.

A hand expressing the affirmation of a situation with a 'thumbs up'.

Thumbs up

A hand expressing the affirmation of a situation with a 'thumbs up'.

"Tilt Hammer." &mdash; Encyclopedia Britannica, 1893

Tilt Hammer

"Tilt Hammer." — Encyclopedia Britannica, 1893

The two-handed sign language alphabet.

Two-handed Alphabet

The two-handed sign language alphabet.

One-handed Sign for U.

U

One-handed Sign for U.

Two-handed Sign for U.

U

Two-handed Sign for U.

One-handed Sign for V.

V

One-handed Sign for V.

Two-handed Sign for V.

V

Two-handed Sign for V.

A vice used to hold wood in place.

Vice

A vice used to hold wood in place.

This diagram shows a hand gesture that represents violent repulsion.

Violent Repulsion

This diagram shows a hand gesture that represents violent repulsion.

Vowels have a wide, firm, and free channel, whereby the breath is modified without friction or sibilation. &hellip; in representing vowels the hand suggests a wide and firm channel, by having the accented finger bent and its terminal phalanx brought firmly in contact with the terminal phalanx of the thumb. <p> Vowel positions are distinguished by always having the voice phalanx of the thumb accented and in contact with the terminal phalanx of the accented finger. This kind of accent is the strongest which can be given a finger, and so always takes precedence. Two modes of accentuation may not co-exist. Front Vowels have the palm in the anterior position. In Primary Vowel positions the accented voice phalanx of the thumb and the terminal phalanx of the accented finger overlap. None of the unaccented fingers are straightened. Low Vowels have the first or index finger accented.

Round Front Primary Low Vowel

Vowels have a wide, firm, and free channel, whereby the breath is modified without friction or sibilation.…

Vowels have a wide, firm, and free channel, whereby the breath is modified without friction or sibilation. &hellip; in representing vowels the hand suggests a wide and firm channel, by having the accented finger bent and its terminal phalanx brought firmly in contact with the terminal phalanx of the thumb. <p> Vowel positions are distinguished by always having the voice phalanx of the thumb accented and in contact with the terminal phalanx of the accented finger. This kind of accent is the strongest which can be given a finger, and so always takes precedence. Two modes of accentuation may not co-exist. Front Vowels have the palm in the anterior position. In Primary Vowel positions the accented voice phalanx of the thumb and the terminal phalanx of the accented finger overlap. None of the unaccented fingers are straightened. Mid Vowels have the center finger accented.

Round Front Primary Mid Vowel

Vowels have a wide, firm, and free channel, whereby the breath is modified without friction or sibilation.…

Vowels have a wide, firm, and free channel, whereby the breath is modified without friction or sibilation. &hellip; in representing vowels the hand suggests a wide and firm channel, by having the accented finger bent and its terminal phalanx brought firmly in contact with the terminal phalanx of the thumb. <p> Vowel positions are distinguished by always having the voice phalanx of the thumb accented and in contact with the terminal phalanx of the accented finger. This kind of accent is the strongest which can be given a finger, and so always takes precedence. Two modes of accentuation may not co-exist. Front Vowels have the palm in the anterior position. Wide Vowel positions differ from analogous Primary Vowel positions by having straightened unaccented fingers, to denote "Wide." Low Vowels have the first or index finger accented.

Round Front Wide Low Vowel

Vowels have a wide, firm, and free channel, whereby the breath is modified without friction or sibilation.…

Vowels have a wide, firm, and free channel, whereby the breath is modified without friction or sibilation. &hellip; in representing vowels the hand suggests a wide and firm channel, by having the accented finger bent and its terminal phalanx brought firmly in contact with the terminal phalanx of the thumb. <p> Vowel positions are distinguished by always having the voice phalanx of the thumb accented and in contact with the terminal phalanx of the accented finger. This kind of accent is the strongest which can be given a finger, and so always takes precedence. Two modes of accentuation may not co-exist. Front Vowels have the palm in the anterior position. Wide Vowel positions differ from analogous Primary Vowel positions by having straightened unaccented fingers, to denote "Wide." Mid Vowels have the center finger accented.

Round Front Wide Mid Vowel

Vowels have a wide, firm, and free channel, whereby the breath is modified without friction or sibilation.…

Vowels have a wide, firm, and free channel, whereby the breath is modified without friction or sibilation. &hellip; in representing vowels the hand suggests a wide and firm channel, by having the accented finger bent and its terminal phalanx brought firmly in contact with the terminal phalanx of the thumb. <p> Vowel positions are distinguished by always having the voice phalanx of the thumb accented and in contact with the terminal phalanx of the accented finger. This kind of accent is the strongest which can be given a finger, and so always takes precedence. Two modes of accentuation may not co-exist. Mixed Vowels have the palm thrown forward so as to assume a compromising position. In Primary Vowel positions the accented voice phalanx of the thumb and the terminal phalanx of the accented finger overlap. None of the unaccented fingers are straightened. Wide Vowel positions differ from analogous Primary Vowel positions by having straightened unaccented fingers, to denote "Wide." Low Vowels have the first or index finger accented.

Round Mixed Primary Low Vowel

Vowels have a wide, firm, and free channel, whereby the breath is modified without friction or sibilation.…

Vowels have a wide, firm, and free channel, whereby the breath is modified without friction or sibilation. &hellip; in representing vowels the hand suggests a wide and firm channel, by having the accented finger bent and its terminal phalanx brought firmly in contact with the terminal phalanx of the thumb. <p> Vowel positions are distinguished by always having the voice phalanx of the thumb accented and in contact with the terminal phalanx of the accented finger. This kind of accent is the strongest which can be given a finger, and so always takes precedence. Two modes of accentuation may not co-exist. Mixed Vowels have the palm thrown forward so as to assume a compromising position. Wide Vowel positions differ from analogous Primary Vowel positions by having straightened unaccented fingers, to denote "Wide." Low Vowels have the first or index finger accented.

Round Mixed Wide Low Vowel

Vowels have a wide, firm, and free channel, whereby the breath is modified without friction or sibilation.…

Vowels have a wide, firm, and free channel, whereby the breath is modified without friction or sibilation. &hellip; in representing vowels the hand suggests a wide and firm channel, by having the accented finger bent and its terminal phalanx brought firmly in contact with the terminal phalanx of the thumb. <p> Vowel positions are distinguished by always having the voice phalanx of the thumb accented and in contact with the terminal phalanx of the accented finger. This kind of accent is the strongest which can be given a finger, and so always takes precedence. Two modes of accentuation may not co-exist. Back Vowels have the palm in the posterior position. In Primary Vowel positions the accented voice phalanx of the thumb and the terminal phalanx of the accented finger overlap. None of the unaccented fingers are straightened. High Vowels have the third finger accented

Normal Aperture Back Primary High Vowel

Vowels have a wide, firm, and free channel, whereby the breath is modified without friction or sibilation.…

Vowels have a wide, firm, and free channel, whereby the breath is modified without friction or sibilation. &hellip; in representing vowels the hand suggests a wide and firm channel, by having the accented finger bent and its terminal phalanx brought firmly in contact with the terminal phalanx of the thumb. <p> Vowel positions are distinguished by always having the voice phalanx of the thumb accented and in contact with the terminal phalanx of the accented finger. This kind of accent is the strongest which can be given a finger, and so always takes precedence. Two modes of accentuation may not co-exist. Back Vowels have the palm in the posterior position. In Primary Vowel positions the accented voice phalanx of the thumb and the terminal phalanx of the accented finger overlap. None of the unaccented fingers are straightened. Low Vowels have the first or index finger accented.

Normal Aperture Back Primary Low Vowel

Vowels have a wide, firm, and free channel, whereby the breath is modified without friction or sibilation.…

Vowels have a wide, firm, and free channel, whereby the breath is modified without friction or sibilation. &hellip; in representing vowels the hand suggests a wide and firm channel, by having the accented finger bent and its terminal phalanx brought firmly in contact with the terminal phalanx of the thumb. <p> Vowel positions are distinguished by always having the voice phalanx of the thumb accented and in contact with the terminal phalanx of the accented finger. This kind of accent is the strongest which can be given a finger, and so always takes precedence. Two modes of accentuation may not co-exist. Back Vowels have the palm in the posterior position. In Primary Vowel positions the accented voice phalanx of the thumb and the terminal phalanx of the accented finger overlap. None of the unaccented fingers are straightened. Mid Vowels have the center finger accented.

Normal Aperture Back Primary Mid Vowel

Vowels have a wide, firm, and free channel, whereby the breath is modified without friction or sibilation.…

Vowels have a wide, firm, and free channel, whereby the breath is modified without friction or sibilation. &hellip; in representing vowels the hand suggests a wide and firm channel, by having the accented finger bent and its terminal phalanx brought firmly in contact with the terminal phalanx of the thumb. <p> Vowel positions are distinguished by always having the voice phalanx of the thumb accented and in contact with the terminal phalanx of the accented finger. This kind of accent is the strongest which can be given a finger, and so always takes precedence. Two modes of accentuation may not co-exist. Back Vowels have the palm in the posterior position. Wide Vowel positions differ from analogous Primary Vowel positions by having straightened unaccented fingers, to denote "Wide." High Vowels have the third finger accented

Normal Aperture Back Wide High Vowel

Vowels have a wide, firm, and free channel, whereby the breath is modified without friction or sibilation.…

Vowels have a wide, firm, and free channel, whereby the breath is modified without friction or sibilation. &hellip; in representing vowels the hand suggests a wide and firm channel, by having the accented finger bent and its terminal phalanx brought firmly in contact with the terminal phalanx of the thumb. <p> Vowel positions are distinguished by always having the voice phalanx of the thumb accented and in contact with the terminal phalanx of the accented finger. This kind of accent is the strongest which can be given a finger, and so always takes precedence. Two modes of accentuation may not co-exist. Back Vowels have the palm in the posterior position. Wide Vowel positions differ from analogous Primary Vowel positions by having straightened unaccented fingers, to denote "Wide." Low Vowels have the first or index finger accented.

Normal Aperture Back Wide Low Vowel

Vowels have a wide, firm, and free channel, whereby the breath is modified without friction or sibilation.…

Vowels have a wide, firm, and free channel, whereby the breath is modified without friction or sibilation. &hellip; in representing vowels the hand suggests a wide and firm channel, by having the accented finger bent and its terminal phalanx brought firmly in contact with the terminal phalanx of the thumb. <p> Vowel positions are distinguished by always having the voice phalanx of the thumb accented and in contact with the terminal phalanx of the accented finger. This kind of accent is the strongest which can be given a finger, and so always takes precedence. Two modes of accentuation may not co-exist. Back Vowels have the palm in the posterior position. Wide Vowel positions differ from analogous Primary Vowel positions by having straightened unaccented fingers, to denote "Wide." Mid Vowels have the center finger accented.

Normal Aperture Back Wide Mid Vowel

Vowels have a wide, firm, and free channel, whereby the breath is modified without friction or sibilation.…

Vowels have a wide, firm, and free channel, whereby the breath is modified without friction or sibilation. &hellip; in representing vowels the hand suggests a wide and firm channel, by having the accented finger bent and its terminal phalanx brought firmly in contact with the terminal phalanx of the thumb. <p> Vowel positions are distinguished by always having the voice phalanx of the thumb accented and in contact with the terminal phalanx of the accented finger. This kind of accent is the strongest which can be given a finger, and so always takes precedence. Two modes of accentuation may not co-exist. Front Vowels have the palm in the anterior position. In Primary Vowel positions the accented voice phalanx of the thumb and the terminal phalanx of the accented finger overlap. None of the unaccented fingers are straightened. High Vowels have the third finger accented

Normal Aperture Front Primary High Vowel

Vowels have a wide, firm, and free channel, whereby the breath is modified without friction or sibilation.…

Vowels have a wide, firm, and free channel, whereby the breath is modified without friction or sibilation. &hellip; in representing vowels the hand suggests a wide and firm channel, by having the accented finger bent and its terminal phalanx brought firmly in contact with the terminal phalanx of the thumb. <p> Vowel positions are distinguished by always having the voice phalanx of the thumb accented and in contact with the terminal phalanx of the accented finger. This kind of accent is the strongest which can be given a finger, and so always takes precedence. Two modes of accentuation may not co-exist. Front Vowels have the palm in the anterior position. In Primary Vowel positions the accented voice phalanx of the thumb and the terminal phalanx of the accented finger overlap. None of the unaccented fingers are straightened. Low Vowels have the first or index finger accented.

Normal Aperture Front Primary Low Vowel

Vowels have a wide, firm, and free channel, whereby the breath is modified without friction or sibilation.…

Vowels have a wide, firm, and free channel, whereby the breath is modified without friction or sibilation. &hellip; in representing vowels the hand suggests a wide and firm channel, by having the accented finger bent and its terminal phalanx brought firmly in contact with the terminal phalanx of the thumb. <p> Vowel positions are distinguished by always having the voice phalanx of the thumb accented and in contact with the terminal phalanx of the accented finger. This kind of accent is the strongest which can be given a finger, and so always takes precedence. Two modes of accentuation may not co-exist. Front Vowels have the palm in the anterior position. In Primary Vowel positions the accented voice phalanx of the thumb and the terminal phalanx of the accented finger overlap. None of the unaccented fingers are straightened. Mid Vowels have the center finger accented.

Normal Aperture Front Primary Mid Vowel

Vowels have a wide, firm, and free channel, whereby the breath is modified without friction or sibilation.…