"Draw three-inch square. Draw lines AB, BC, DE and EF at 30 degrees. Divide lower side into seven equal…
"Through the center of the space draw the three construction lines, AB vertical, DE and FG at 30 degrees.…
"An exercise in starting and stopping short lines. Draw three-inch square. Draw diagonals with 45-degree…
"Draw three-inch square and one-inch square. From the corners of inner square draw lines to outer square…
"On horizontal center line mark off eleven points 1/4" apart, beginning at left side of space. Draw…
"Draw a circle three inches in diameter. Divide the circumference into five equal parts by trial with…
"On base AB, 3 1/2" long construct an equilateral triangle, using the 60-degree triangle. Bisect the…
"Draw lines parallel to AB and CD at distant R from them. The intersection of these lines will be center…
Make a perpendicular lines at point B and C, and join by a straight line. Create a desired curve by…
Using C as a center, draw two circles with different diameters. The intersection of the diameter lines…
"When the minor axis is at least two-thirds the major, the following method ma be used: Make CF and…
"Any noncircular curve may be approximated by tangent circle arcs, selecting a center by trial, drawing…
"Let OA and OB be the asymptotes and P a point on the curve. Draw PC and PD. Mark any points on Pc;…
"For the first practice draw in pencil top and bottom guide lines for 3/16" letters and with a 516 F…
An automatic lubrication system often referred to as a centralized lubricator comprises a controller,…
A T-square is a technical drawing instrument, primarily a guide for drawing horizontal lines on a drafting…
The hydraulic brake is an arrangement of braking mechanism which uses brake fluid, typically containing…
"In the inclined style the 2 to 5 direction lines should be drawn until one has become very proficient…
In the electrical distribution utility industry a cutout is a combination fuse and switch used in primary…
This is a hay lifting device composed of one mast or pole which is hinged freely at the bottom. It is…
Vertical line is drawn downward with the pencil held with freedom, not close to the point.
Horizontal line can be drawn left to right by holding the pencil away from the point.
"Holding the pencil in a plane perpendicular to the line of sight, marking with the thumb the length…
A perspective view of the shoreline illustrated by using contour lines.
"In water—lining a stream of varying width, the lines are not to be crowded so as to be carried…
An illustration of even line shading using ruled lines. Lined shading is commonly used in patents.
An illustration of creating a line shading from dark to light. The lines are gradually become thin.…
An example of the cylinder shaded by lines. The area without lines are where the light hit the cylinder.…
"A row of cylinders of different sizes. The effect of polish is given by leaving several brilliant lines,…
The illustration showing the centrifugal governor metal ball removed from the lathe to draw 180 degree…
A front and side view of a t square with rectangular head. The t square is used draw straight lines…
An illustration of Axonometric Projection, or object related by plane of projection, of a cube. The…
The illustration of constructing a circle or ellipse using isometric drawing. The inscribed circle is…
The illustration of an irregular curves for solid. The isometric projection of the curve can be drawn…
A development, or rolled out, triangle pyramid. The image is created by making an arc at the bottom…
An outside view of two cylinders intersecting in an auxiliary plane. The dotted lines is the center…
A double thread screw drawn by drawing diagonal lines in between the pitch. The double thread screw…
An exercise of creating a series of repeating and alternating vertical and horizontal lines in an equally…
A problem exercise using a t square and 45 degree triangle to divide the paper into half inch squares.…
An exercise problem to create a vanishing point using lines. The line is drawn by placing a dot into…
"Divide the square as indicated by the dotted lines, drawing these as full lines in pencil, but do not…
"Use the T square and 45 degree triangle to divide the square as indicated, the size of the small squares…
A diagonal line pattern drawing exercise in for T square and triangle. The image is constructed by dividing…
The construction of a star with square overlapping each other using a triangle and T square. This image…
A problem exercise to construct a star overlapping square using a triangle and T square. The image is…
An exercise problem drawing a series of horizontal lines using a straight edge or triangle without using…
An exercise for mechanical drawing to construct a series of horizontal lines. The solid lines are drawn…
This folding square is also known as a t-square which is a technical instrument, primarily a guide for…
A drawing exercise for drawing eight concentric circles by dividing the paper in quarters as shown.…
Mechanical drawing exercise of drawing dotted lined concentric circles. The circles are first drawn…
A mechanical drawing exercise of a circle with curved wavy lines. The image is drawn by dividing horizontal…
A mechanical drawing exercise of drawing a curved line with circle in the middle. The image is drawn…
"With a 45 degree triangle draw lines AC and BD through the center and construct three squares. Set…
A practice exercise for mechanical drawing to line shade the plate with elliptic holes. The plate is…
This clothes pin serves several purposes, initially used to grab onto clothing garments which hung from…
This is an architectural tool, which facilitates the use of drawing straight lines and right angles,…
A straightedged strip, as of wood or metal, for drawing straight lines and measuring lengths.
"As the eccentric turns in the strap, the point O moves in the dotted circle around O', and the point…