Author Archives: admin
Computer, Pocket HP41CX
Hand held computer Hewlett Packard Model 41CX S/N 2851S22388.
Computer, Pocket HP33E
The HP-33E and HP-33C were the basic scientific programmable members of the 30 series. The...
Calculator, Lightning
Made by The Lighting Calculator Co. and produced from 1922 to WW2 in Grand Rapids...
Calculator, Brunsviga
Brunsviga-Rechenmachine Dopple 132 Manufactored in Brunsviga Maschinenwerte A.G. Braunschweig
Theodolite, Cooke, Troughton & Simms: s/n VO 36315
s/n V012065 Theodolite with carrying case: COOK, TROUGHTON & SIMMS, LTD. YORK. ENGLAND. V012065 A...
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...
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.