An illustration of a decorative number 2.

Decorative Number 2

An illustration of a decorative number 2.

An illustration of the number 2.

Number 2

An illustration of the number 2.

Bilingual Counting Card featuring illustrations of two Florida Alligators.

Bilingual Alligator Counting Card 2

Bilingual Counting Card featuring illustrations of two Florida Alligators.

English Counting Card featuring illustrations of two Florida Alligators.

English Alligator Counting Card 2

English Counting Card featuring illustrations of two Florida Alligators.

Spanish Counting Card featuring illustrations of two Florida Alligators.

Spanish Alligator Counting Card 2

Spanish Counting Card featuring illustrations of two Florida Alligators.

Illustration of the superposition of two angles to compare magnitudes of the same kind.

Superposition of Angles

Illustration of the superposition of two angles to compare magnitudes of the same kind.

Two apples.

Two Apples

Two apples.

"An apparatus designed to measure the elongation or contraction of a spring when attached to two scale-pans, with one immersed in water." -Avery 1895

Jolly Balance

"An apparatus designed to measure the elongation or contraction of a spring when attached to two scale-pans,…

Two birds.

Two Birds

Two birds.

An illustration of a boy waking a sleeping boy with a small bell.

Boy Waking Another Boy with Bell

An illustration of a boy waking a sleeping boy with a small bell.

An illustration of a boy watching two rabbits dig two separate holes but believes that it is one large rabbit.

Boy Watching Two Rabbits Dig Holes

An illustration of a boy watching two rabbits dig two separate holes but believes that it is one large…

A chaise, sometimes called chay or shay, was a formerly popular, light two- or four-wheeled traveling or pleasure carriage, usually of a chair-backed type, with a movable hood or calash top. The name came from the French for chair, through a transference from a sedan-chair to a wheeled vehicle. The two-wheeled version, for one or two persons, also called a gig or one-horse shay, had a body hung on leather straps or thorough-braces and was usually drawn by one horse; a light chaise having two seats was a double chair . The four-wheeled pleasure carriage type was similar. The term chaise was also used for any light carriage or pleasure cart.

Chaise

A chaise, sometimes called chay or shay, was a formerly popular, light two- or four-wheeled traveling…

Two cherries.

Two Cherries

Two cherries.

Two children walking under an umbrella.

Two Children Walking Under an Umbrella

Two children walking under an umbrella.

2 congruent circles whose intersection includes a tangent circle with diameter equal to the radii of the larger circles.

2 Intersecting Circles

2 congruent circles whose intersection includes a tangent circle with diameter equal to the radii of…

A regular hexagon containing 7 congruent circles. The circles are externally tangent to each other and internally tangent to the hexagon.

7 Congruent Circles In A Regular Hexagon

A regular hexagon containing 7 congruent circles. The circles are externally tangent to each other and…

Intersecting circles with chords and radii.

Intersecting Circles

Intersecting circles with chords and radii.

An illustration of a Roman Numeral clock showing 2:30.

Clock 2:30

An illustration of a Roman Numeral clock showing 2:30.

An illustration of a Roman Numeral clock showing 2:50.

Clock 2:50

An illustration of a Roman Numeral clock showing 2:50.

"Two balls after an inelastic collision." —Quackenbos 1859

Inelastic Collision

"Two balls after an inelastic collision." —Quackenbos 1859

The first two-fluid cell was incented by Daniell, and English electrician in 1836..." -Atkinson 1903

Daniel Cell

The first two-fluid cell was incented by Daniell, and English electrician in 1836..." -Atkinson 1903

Pair of thrown dice showing a four and a two.

Dice Pair, 4-2

Pair of thrown dice showing a four and a two.

Pair of thrown dice showing a five and a two.

Dice Pair, 5-2

Pair of thrown dice showing a five and a two.

Pair of thrown dice showing a six and a two.

Dice Pair, 6-2

Pair of thrown dice showing a six and a two.

A die with face of two.

Die Showing Two

A die with face of two.

Bilingual Counting Card featuring illustrations of two Dolphins.

Bilingual Dolphin Counting Card 2

Bilingual Counting Card featuring illustrations of two Dolphins.

English Counting Card featuring illustrations of two Dolphins.

English Dolphin Counting Card 2

English Counting Card featuring illustrations of two Dolphins.

Spanish Counting Card featuring illustrations of two Dolphins.

Spanish Dolphin Counting Card 2

Spanish Counting Card featuring illustrations of two Dolphins.

An illustration of a double border.

Double Border

An illustration of a double border.

"An electrodynamometer is a galvanometer with two coils, at least one of which is movable, and through at least one of which the curent to be measured passes. It is very useful in the measurement of alternating curernts and voltages." -Avery 1895

Electrodynamometer

"An electrodynamometer is a galvanometer with two coils, at least one of which is movable, and through…

Two American flags.

Two American Flags

Two American flags.

Bilingual Counting Card featuring illustrations of two Flamingos.

Bilingual Flamingo Counting Card 2

Bilingual Counting Card featuring illustrations of two Flamingos.

English Counting Card featuring illustrations of two Flamingos.

English Flamingo Counting Card 2

English Counting Card featuring illustrations of two Flamingos.

Spanish Counting Card featuring illustrations of two Flamingos.

Spanish Flamingo Counting Card 2

Spanish Counting Card featuring illustrations of two Flamingos.

Bilingual Counting Card featuring illustrations of two Florida Manatees.

Bilingual Florida Manatee Counting Card 2

Bilingual Counting Card featuring illustrations of two Florida Manatees.

English Counting Card featuring illustrations of two Florida Manatees.

English Florida Manatee Counting Card 2

English Counting Card featuring illustrations of two Florida Manatees.

Spanish Counting Card featuring illustrations of two Florida Manatees.

Spanish Florida Manatee Counting Card 2

Spanish Counting Card featuring illustrations of two Florida Manatees.

Bilingual Counting Card featuring illustrations of two Florida Panthers.

Bilingual Florida Panther Counting Card 2

Bilingual Counting Card featuring illustrations of two Florida Panthers.

English Counting Card featuring illustrations of two Florida Panthers.

English Florida Panther Counting Card 2

English Counting Card featuring illustrations of two Florida Panthers.

Spanish Counting Card featuring illustrations of two Florida Panthers.

Spanish Florida Panther Counting Card 2

Spanish Counting Card featuring illustrations of two Florida Panthers.

Numerical fraction 10/5

Numerical fraction 10/5

Numerical fraction 10/5

Numerical fraction 12/6

Numerical fraction 12/6

Numerical fraction 12/6

Numerical fraction 2/1

Numerical fraction 2/1

Numerical fraction 2/1

Numerical fraction 6/3

Numerical fraction 6/3

Numerical fraction 6/3

A house designed with double gables, which give an effect of roominess and comfort.

Double Gables

A house designed with double gables, which give an effect of roominess and comfort.

"In railway engineering, the running together of parallel tracks into the space occupied by one, by crossing the two inner rails so as to bring each side by side with the opposite outer rail." -Whitney, 1911

Gauntlet Track

"In railway engineering, the running together of parallel tracks into the space occupied by one, by…

An illustration of hands depicting 2 US Style

United States Style Counting Hands

An illustration of hands depicting 2 US Style

"Argent, a fess gules, impaled with argent, a bend azure. IMPALED. Two coats of arms, conjoined paleways, in one shield." -Hall, 1862

Impaled

"Argent, a fess gules, impaled with argent, a bend azure. IMPALED. Two coats of arms, conjoined paleways,…

"Two-light lancet." —D'Anvers, 1895

Two-light lancet

"Two-light lancet." —D'Anvers, 1895

Two leaves.

Two Leaves

Two leaves.

"The double convex lens may be described as the part common to two spheres that intersect each other. The centers of the limiting spherical surfaces, as c and C, are the centers of curvature. The straight line, XY, passing through the centers of curvature is the principal axis of the lens." -Avery 1895

Double Convex Lens

"The double convex lens may be described as the part common to two spheres that intersect each other.…

An illustration of marrying two ropes.

Marrying of Ropes

An illustration of marrying two ropes.

"By placing two plane mirrors facing each other, we may produce an indefinite series of images of an object between them. Each image acts as a material object with respect to the other mirror, in which we see an image of the first image, etc. When the mirrors are placed so as to form with each other an angle that is an aliquot part of 360 degrees, the number of images is one less than the quotient obtained by dividing four right angles by the included angle, provuded that quotient is an even number." -Avery 1895

Multiple Images in a Plane Mirror

"By placing two plane mirrors facing each other, we may produce an indefinite series of images of an…

Bilingual Counting Card featuring illustrations of two Palm Trees.

Bilingual Palm Tree Counting Card 2

Bilingual Counting Card featuring illustrations of two Palm Trees.

English Counting Card featuring illustrations of two Palm Trees.

English Palm Tree Counting Card 2

English Counting Card featuring illustrations of two Palm Trees.

Spanish Counting Card featuring illustrations of two Palm Trees.

Spanish Palm Tree Counting Card 2

Spanish Counting Card featuring illustrations of two Palm Trees.

Two pansies.

Two Pansies

Two pansies.

Two pears.

Two Pears

Two pears.

An illustration of two pencils, one long and one short.

Long & Short Pencils

An illustration of two pencils, one long and one short.

"The effect of holding polarizing lenses at right angles to each other." -Avery 1895

Polarization of Light

"The effect of holding polarizing lenses at right angles to each other." -Avery 1895