2 parallel vertical lines with arrows on both ends to show that they extend indefinitely.

Lines, 2 Parallel Vertical

2 parallel vertical lines with arrows on both ends to show that they extend indefinitely.

2 intersecting lines, one of which is vertical and one of which is horizontal. The intersection forms a right angle.

Intersecting Lines, 2 Perpendicular

2 intersecting lines, one of which is vertical and one of which is horizontal. The intersection forms…

3 parallel vertical lines with arrows on both ends to show that they extend indefinitely.

Lines, 3 Parallel Vertical

3 parallel vertical lines with arrows on both ends to show that they extend indefinitely.

4 parallel vertical lines with arrows on both ends to show that they extend indefinitely.

Lines, 4 Parallel Vertical

4 parallel vertical lines with arrows on both ends to show that they extend indefinitely.

5 parallel vertical lines with arrows on both ends to show that they extend indefinitely.

Lines, 5 Parallel Vertical

5 parallel vertical lines with arrows on both ends to show that they extend indefinitely.

6 parallel vertical lines with arrows on both ends to show that they extend indefinitely.

Lines, 6 Parallel Vertical

6 parallel vertical lines with arrows on both ends to show that they extend indefinitely.

Illustration to show that the bisector of one of two vertical angles bisects the other.

Bisected Angle

Illustration to show that the bisector of one of two vertical angles bisects the other.

Illustration to show that the bisector of two pairs of vertical angles formed by two intersecting lines are perpendicular to each other.

Bisected Angles

Illustration to show that the bisector of two pairs of vertical angles formed by two intersecting lines…

Illustration to show that the bisector of the vertical angle of an isosceles triangle bisects the base, and is perpendicular to the base.

Bisected Vertical Angle of an Isosceles Triangle

Illustration to show that the bisector of the vertical angle of an isosceles triangle bisects the base,…

Vertical angles are when two angles have the same vertex, and the sides of the one are prolongations of the sides of the other. In this illustration, a and b are vertical angles and c and d are vertical angles.

Vertical Angles

Vertical angles are when two angles have the same vertex, and the sides of the one are prolongations…

Vertical Lift Bridge

Bridge, Vertical Lift

Vertical Lift Bridge

"A vertical conductor carrying an electric current, and surrounded by a magnetic line of force, which is in turn surrounded by electric whirls; the magnetic line of force is an electric vortex-ring." — Avery, 1895

Vertical conductor

"A vertical conductor carrying an electric current, and surrounded by a magnetic line of force, which…

This modern French console is a vertical design of spiral curves and straight lines.

Modern French Console

This modern French console is a vertical design of spiral curves and straight lines.

This modern French console is a vertical design of spiral curves and straight lines.

Modern French Console

This modern French console is a vertical design of spiral curves and straight lines.

This modern French console is a vertical design of spiral curves and straight lines.

Modern French Console

This modern French console is a vertical design of spiral curves and straight lines.

Illustration of a shaded vertical cylinder, viewed from the side.

Vertical Cylinder

Illustration of a shaded vertical cylinder, viewed from the side.

"A vertical section through the valve casing of a double-column hammer, used for heavy forge work."—Finley, 1917

Vertical section of a double-hammer column

"A vertical section through the valve casing of a double-column hammer, used for heavy forge work."—Finley,…

"An ordinary vertical drilling machine, one of comparatively small size and single-geared having been chosen rather than a larger example with greater complication. When once properly started, this machine is self-acting, but for each hole the work has to be adjusted by hand so as to bring the required portion exactly under the drill spindle, and the small size of the table prevents its being at any great distance from the edge." —The Encyclopedia Britannica, 1903

Drilling Machine

"An ordinary vertical drilling machine, one of comparatively small size and single-geared having been…

A graph of tan ellipse with Foci and Center.

Graph of Ellipse with Foci and Center Labeled

A graph of tan ellipse with Foci and Center.

"Around a vertical conductor carrying a heavy current, place a peice of paper and sprinkle iron filling on the paper. Notice that the iron particles arrange themselves in distinct circular whirls around the wire, as shown." -Avery 1895

Magnetic Field Due to Current

"Around a vertical conductor carrying a heavy current, place a peice of paper and sprinkle iron filling…

A ladder is an inclined set of steps, hinged in the middle to form an inverted V, with stays to keep the two havles at a fixed angle.

Folding Step Ladder

A ladder is an inclined set of steps, hinged in the middle to form an inverted V, with stays to keep…

A tool used to indicate whether a surface is level (horizontal) or plumb (vertical).

Spirit Level

A tool used to indicate whether a surface is level (horizontal) or plumb (vertical).

Projections of a line inclined to both the horizontal and vertical planes will not show its true length, as represented in this drawing.

Projections of a Line

Projections of a line inclined to both the horizontal and vertical planes will not show its true length,…

Projections of a line's true length by revolving vertical projection.

Projections of a Line

Projections of a line's true length by revolving vertical projection.

Illustration of two lines intersecting at a point. This can be used to show vertical angles.

Intersecting Straight Lines

Illustration of two lines intersecting at a point. This can be used to show vertical angles.

Illustration of two straight lines drawn from a point in a perpendicular to a given line, cutting off on the given line equal segments from the foot of the perpendicular, are equal and make equal angles with the perpendicular. This illustration can be used to show the proof.

Lines Drawn to Another Line to Form Triangle

Illustration of two straight lines drawn from a point in a perpendicular to a given line, cutting off…

Right angle at perpendicular lines demonstrated by string on plumb line.

Perpendicular Lines

Right angle at perpendicular lines demonstrated by string on plumb line.

Illustration of perpendicular lines with the horizontal and vertical lines labeled. "A horizontal line is a line parallel to the horizon, or water level. A vertical line is a line perpendicular to a horizontal line; consequently, it has the direction of a plumb-line."

Perpendicular Lines With Horizontal and Vertical Labeled

Illustration of perpendicular lines with the horizontal and vertical lines labeled. "A horizontal line…

Labeled shapes showing various measures of form.

Measures of Form

Labeled shapes showing various measures of form.

"The accompanying engraving is an illustration of a new style vertical mill in which an attempt is made to embody all the improvements which have been suggested by experience, and to furnish a complete vertical cane mill. In this machine the hearing is placed between the rolls, giving access to the boxes; the small wheels are lapped, bringing the minor rolls close together, and dispensing with the guide plate or 'dumb returner;' the main roll has a wide flange; the sweep cap has a square eye fitted to the squared end of the main shaft removable by hand; the weight of the rolls is supported upon the ends of the shafts in adjustable oil-tight boxes; the feed roll is fluted to facilitate the entrance of the cane to the mill; the top and bottom plates are diagonally braced as represent, and the construction of the whole machine is such that the mill may be taken entirely apart by simply unscrewing the corner bolts, no keys being used in any part of the machine." -Commissioner, 1865

Vertical cane mill

"The accompanying engraving is an illustration of a new style vertical mill in which an attempt is made…

"To avoid the inconvenience of having the team travel around the mill, interfering with the passing to and fro with cane and bagasse, the plan has been adopted by one manufacturer at least, of prolonging the main shaft of the mill down through the floor, and there coupling it with another shaft which continues down and rests in a step on the floor of a lower story or basement. The sweep is attached to the shaft below, and the team is thus removed from around the mill leaving the space unobstructed." -Commission, 1865

Vertical cane mill

"To avoid the inconvenience of having the team travel around the mill, interfering with the passing…

"Azure, a pale or. PALE. One of the honourable ordinaries formed by two perpendicular lines drawn from the base to the chief. The pale occupies one third of the shield." -Hall, 1862

Pale

"Azure, a pale or. PALE. One of the honourable ordinaries formed by two perpendicular lines drawn from…

"Firmly fasten one end of a piece of spring-brass wire, about No. 27 and about 1 m. long so that the wire hangs vertical. To the lower end of the wire fasten a weight of 75 or 100 g. To this weight attach a pointer so that it extends horizontally from the direction of the wire. Turn the weight througha considerable angle, thus twisting the wire. Release the weight, and notice the rapid movements of the pointer of the torsional pendulum." -Avery 1895

Torsional Pendulum

"Firmly fasten one end of a piece of spring-brass wire, about No. 27 and about 1 m. long so that the…

Plan, front, and side views of a square pyramid after revolving pyramid through 30° with vertical plane.

Square Pyramid Revolved 30°

Plan, front, and side views of a square pyramid after revolving pyramid through 30° with vertical…

A heraldic shield with a green surface, which is represented by the perpendicular lines, drawn from the head to the base of the shield.

Gules Shield

A heraldic shield with a green surface, which is represented by the perpendicular lines, drawn from…

A heraldic shield with a black surface, which is shown by the crossing horizontal and vertical lines.

Sable Shield

A heraldic shield with a black surface, which is shown by the crossing horizontal and vertical lines.

Illustration to show the bisector of the vertical angle A of a triangle ABC, and the bisectors of the exterior angles at the base formed by producing the sides AB and AC, meet in a point which is equidistant from the base and the sides produced.

Triangle With Bisectors of Vertical Angles

Illustration to show the bisector of the vertical angle A of a triangle ABC, and the bisectors of the…

Illustration to show that the perpendicular bisector of the base of an isosceles triangle passes through the vertex and bisects the angle at the vertex.

Perpendicular Bisector of the Base of an Isosceles Triangle

Illustration to show that the perpendicular bisector of the base of an isosceles triangle passes through…

"Direction of the needle when placed vertical next to the uniting wire." -Comstock 1850

Wire at the Vertical of the Uniting Wire

"Direction of the needle when placed vertical next to the uniting wire." -Comstock 1850

"The effect of vertical movement in lengthening the effect." —Kinne, 1920

Vertical effect

"The effect of vertical movement in lengthening the effect." —Kinne, 1920

A vertical line with arrows at both ends to show that it extends indefinitely.

Line, Vertical

A vertical line with arrows at both ends to show that it extends indefinitely.

A vertical line with arrows at both ends to show that it extends indefinitely.

Line, Vertical

A vertical line with arrows at both ends to show that it extends indefinitely.

"This machine consists of two vertical shafts, carrying radial arms. These arms pass each other in opposite directions, so that, in addition to a tearing action on the dough, which the knives have on passing each other, they have a screw action, pressing the dough down on one side and up on the other. The vessels containing the dough are made of wood, of an oval form, to correspong with the action of the machine." — Encyclopedia Britanica, 1893

Vertical Mixer

"This machine consists of two vertical shafts, carrying radial arms. These arms pass each other in opposite…

"[This illustration] shows a third form of the wheel and axle. Here the axle A is vertical, instead of horizontal. A bar inserted in its head, at the extremity of which the hand is applied, takes the place of the wheel." —Quackenbos 1859

Vertical Wheel and Axle

"[This illustration] shows a third form of the wheel and axle. Here the axle A is vertical, instead…

Theory of static equilibrium of mechanism, illustrated b Sir A.B.W. Kennedy.

Wheel Mechanism

Theory of static equilibrium of mechanism, illustrated b Sir A.B.W. Kennedy.