 Break Lathe

"Break lathes can take in work of considerable length as well as of large diameter,—the treble-geared… Calipers

"A kind of compass for measuring the diameter of round bodies." — Williams, 1889 Circle with Diameter

Illustration of circle with diameter. Circle Diameters

If every diameter is perpendicular to its conjugate, the conic is a circle. Circle Parts

A circle with labels for radius, diameter, and circumference. The visual will help to remember what… Inscribed Angle in a Circle Proof

Illustration of a circle with an inscribed angle that can be used to prove that "An inscribed angle… Circle to Circle Tangents

Equal circles inside and tangent to the outside circle, also tangent to each other Circle With 10 inch Diameter and Steel Square

Illustration of circle with 10 inch diameter and square. Circle With 6 inch Diameter

Illustration of circle with 6 inch diameter. Circle With 8 inch Diameter

Illustration of circle with 8 inch diameter. Area Of A Circle

An illustration used to show how the area of a circle is calculated. Area is equal to the product of… Chords, Diameters, and Radii of a Circle

Illustration of a circle with diameter AB. Radii are RO, SO, AO, and BO. ED is a chord. Chords, Secants, Diameters, and Tangents of a Circle

Illustration of a circle with diameter BC, chord DF, secant MN, and tangent HK. Illustration showing a circle with a diameter, radius, and segment drawn. Circle With Diameter, Radius, Segment, Line

Illustration showing a circle with a diameter, radius, lines, triangle, and segment drawn. Diameters of a Circle

Illustration of a circle with two intersecting diameters. Circle With Parts

Circle with diameter, radius, arc, chord, and arc. Parts of Circle

Illustration of circle with arc, chord, diameter and radius. Circle With Perpendicular Diameters

Illustration of circle with perpendicular diameters. Circle With Perpendicular Diameters

Illustration of circle with perpendicular diameters. Circle With a Perpendicular Drawn to the Diameter

"If from any point on the circumference of a circle, a perpendicular be let fall upon a given diameter,… Circles With Radius 4000 and Enclosed Triangle

Illustration of circle with radius of 4000, and triangle with 45 degree angle enclosed. Radius, Diameter, and Chord In A Circle

An illustration showing a circle with radius r, diameter d, and chord c. Regular Hexagon Inscribed In A Circle

Illustration of a regular hexagon inscribed in a circle. This can also be described as a circle circumscribed… Circle With Diameter and Segment labeled

Illustration of circle with diameter and segment used to find area. Illustration of a square, with diagonals drawn, circumscribed about a circle. This can also be described… Illustration of a square, with 1 diagonals drawn, circumscribed about a circle. This can also be described… Illustration of a square circumscribed about a circle. This can also be described as a circle inscribed… Square Inscribed In A Circle

Illustration of a square inscribed in a circle. This can also be described as a circle circumscribed… Square Inscribed In A Circle

Illustration of a square, with diagonals drawn, inscribed in a circle. This can also be described as… Circle With Various Chords

Illustration showing a circle with various chords drawn. Circle With Various Chords

Illustration showing a circle with various chords drawn. Circle With Various Chords And Tangents

Illustration showing a circle with various chords and tangents drawn. Circle With Various Chords And Tangents

Illustration showing a circle with various chords and tangents drawn. Circles Enclosed in Equilateral Triangle

Illustration of three circles enclosed in an equilateral triangle. Circles Inside of a Square

Illustration of large circle and square with 4 smaller circles inside. Circular Pipes in Box

Illustration of box filled with pipes. Earth Divisions

"The Earth, whose diameter is 7,912 miles, is represented by the globe, or sphere. The straight line… Conjugate Diameters of an Ellipse

Illustration showing that if one diameter is conjugate to a second, the second is conjugate to the first. Epicycloidal Wheel

"Epicycloidal wheel, a wheel or ring fixed to a framework, toothed on its inner side, and having in… Gyroscope

Three suspended concentric circles free to move independently of each other at right angles. Hyperbola Conjugate Diameters

Any two conjugate diameters of an hyperbola are harmonic conjugates with regard to the asymptotes. Increased Velocity

"The principle of increased velocity as bodies descend from a height, is curiously illustrated by pouring… Kauri Pine

The Kauri Pine (Agathis australis) is a coniferous tree peculiar to New Zealand, and forming its most… Magic Circle of Circles

The magic circle of circles, first developed by Benjamin Franklin, consists of eight annular rings and… Circle With 2 Perpendicular Diameters

Illustration of a circle with center O and diameters AB and CD perpendicular to each other. Ring Made of Circles With Diameters 3a-7 and 6a+9

An illustration of a ring (circle within circle), with diameters of 3a-7 and 6a+9. Illustration could… Illustration of ring (small circle in larger concentric circle). Ring With Piece Cut Out

Illustration of ring (small circle in larger concentric circle) with piece cut out. Ring Sprung Into Place

Illustration of ring (small circle in larger concentric circle) sprung into place. Circle Sector

An illustration showing a circle sector with radius r, center/central angle v, and length of circle… Circle Sector

An illustration showing a circle sector with center/central angle v and polygon angle w. Circle Sector

An illustration showing a circle sector with height of segment h and radius r. Semicircle

Semicircle with line drawn perpendicular to the diameter. Illustration of a semicircle with chords and radii. Sphere With 8-inch Diameter Cut by Planes

An 8-inch sphere cut by parallel planes, one 2 inches from center and the other 6 inches from center.… Sphere Cut Into Pyramids.

An illustration of a sphere cut into polygons as bases with their vertices at the center of sphere. Sphere Inside of Cylinder.

An illustration of a sphere inside of a cylinder with radius/diameter labeled. Illustration for showing… Sphere with arcs and circles labeled.

An illustration of a sphere showing diameter, arcs, and circles. A sphere is a solid bounded by a curved…