Computers, Pocket
In the early 1970s, “handheld” or “pocket” calculators and computers were introduced. They were small...
Computers, Desk
In the early 1970s the introduction of competing products such as the Hewlett-Packard 9100 ended...
Compasses
A compass is, in navigation or surveying, the primary device for direction-finding on the surface...
Chain, Gunter’s
The Gunter’s Chain, designed in England by Edward Gunter in 1620. It was one chain...
Clinometers
The clinometer, also called an inclinometer (or in surveying, an Abney level) is part of...
Chains
There are a number of different chains including Gunters and an Engineering chain.
EDM, K & E, Ranger 5
Serial No. 07B5012. Made in U.S.A by Laser Systems & Electronics, Inc. An Affiliate of...
EDM, Geodimeter, Model 6
Serial 6571. This instrument is 21" high, 14" wide, 8.5" deep (with scope in vertical...
C.B. Atkins Photograph Collection
Cecil Benjamin Atkins was born in Cork, Ireland on April 9, 1892 and came to...
Calculator Manual, Odhner
Serial No. 39-289679, Desk top mechanical calculator that belonged to Ted Rippon, ALS. It is...