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

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

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

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

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

An illustration of military personnel measuring close intervals.

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

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

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

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

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

An illustration of military personnel measuring normal intervals.

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

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

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

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

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

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

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