CHM Revolution

Date Introduced

1960 ca.

Photographer

Richards, Mark

Dimensions

3/8 x 13 1/8 x 2 1/2 in.

Manufacturer

Pickett and Eckel, Inc.

Credit Line

Loan of Gwen and Gordon Bell

Copyright Owner

© Mark Richards

Location

United States

Keywords

Oughtred, William; Analog; Hand calculation

Object ID

B1531.01

Pickett was proud of their rules’ color. Their advertising claimed “EYE-SAVER Yellow prevents headaches and tired eyes; aids accuracy.”