Tag Archives: mechanical drawing

Quiz: Name the Artifacts

7 Mar

From the personal property of Charles Frazee:


Top:  Calipers…Still come in handy for measuring inside and outside diameters as well as threads

Left:  Compasses…for drawing circles

Right:  0-1″ Micrometers…particularly helpful for mechanical repair work

Bottom:  Slide rule…what we used before digital calculators (right up to the late 1970s)

Both calipers and micrometers were redesigned 20 years ago to have digital read outs as shown above.