### Caliper with Filler

When the caliper cannot be removed from a thickness, a filler can be used. The distance must be subtracted…

### Inside Caliper

Inside calipers are used to measure hollow objects or internal holes.

### Outside Caliper

Outside calipers are used to measure solid objects.

Transfer the caliper to a scale to receive measurement.

Transfer the caliper to a scale to receive measurement.

### Transfer Caliper

The transfer caliper is provided with a false leg which is set so that the caliper may be opened and…

Vernier Caliper.

### Circle With 36 degree Angles and Radius 1.5 in.

Circle with 36 degree angles marked. This diagram can be used with the following trig problem: Locate…

### Circle With Center o and Radius r with point P

Circle modeling the earth. O is the center of the earth, r the radius of the earth, and h the height…

### Circle With a Chord of 2 ft. and a Radius of 3 ft.

Circle with chord AB=2 ft. and radius OA = 3 ft.. Triangle AOC is a right triangle. Angle AOC=half angle…

### Close Military Interval Measurement

An illustration of military personnel measuring close intervals.

### Curve in Pavement of Road

Illustration of blueprint used by highway engineers to widen the pavement on the inside of the curve…

### Military Distance Measurement

An illustration of military personnel measuring distance.

### Furnace

Inside Length of Furnace, 12 Feet.

### Gauge

A carpenter's tool used for guaging to a width.

### Glass Manufactory

"Flint-Glass Manufactory." — Encyclopedia Britannica, 1893

### Glass Manufactory

"Interior of a crown-glass house." — Encyclopedia Britannica, 1893

### Foci Distance of Hyperbola

Illustration of a hyperbola with distances to foci drawn. "The difference of the distances of any point…

### Military Interval Measurement

An illustration of military personnel measuring intervals.

### Straight Line With Points Divided Into Equal Parts

An illustration of a straight line with 5 points dividing it into 4 equal parts. Multiple of a given…

### Metric and English Systems Compared

Metric and English systems compared. 25 mm and 1 inch on respective rulers.

### Mirror Half the Length of the Object

"This will be understood [here] where the ray of light A B, proceeding from the eye, falls perpendicularly…

### Normal Military Interval Measurement

An illustration of military personnel measuring normal intervals.

### Regular Pentagon With Circle Inscribed

Illustration showing a circle inscribed in a regular pentagon. Or, a regular pentagon circumscribed…

### Rectangle With Dimensions

Rectangle with dimensions labeled. Rectangle can be used to calculate area.

### Rectangle with Lengths a and b with Area ab

An illustration of a rectangle with lengths a and b and area ab.

### Rectangle with Lengths a, b, and c with Areas ac and bc

An illustration of composite rectangle with lengths a, b, and c with area ac + bc. This illustration…

### Roof With 30 degree Inclination for Trigonometry Triangle Problems

Roof with a slope of 30 degrees. Angle theta is the inclination to the horizontal of the line AB, drawn…

### Sawhorse

Sawhorse used to length of legs.

### Two Squares With Sides of Lengths 3,4,5 Placed at Right Angles to Each Other

Two set squares, whose sides are 3,4, and 5 in., are placed so that their 4-in. sides and right angles…

### Survey of Lake Front in Chicago

Illustration showing a survey on the lake front in Chicago with distances and angle measures shown.