Survey Artifact Collection

The Society has a diverse collection of donated survey artifacts. These are grouped together by...

Altimeters

Altimeters measure the height above sea level by measuring barometric pressure. Altimeters and barometers are...

Altimeter, Pennwalt Wallace & Tiernan

This altimeter is one of a pair. They are marked “Pennwalt” “Wallace & Tiernan” Model...

Altimeter, Short & Mason

F.2453. This altimeter is calibrated in feet and inches of mercury. Pocket watch style brass...

Altimeter, Topley Altimeter

This altimeter is marked “No. 8070, Compensated, The Topley Company, “D.L.S. special.” It comes with...

Altimeter, American Paulin Systems

Altimeter, Micro, Model M-2, s/n NS1201K, with Manual "American Paulin System, Altimetry Manual"

Altimeter, Thommen Everest

Hand held THOMMEN EVEREST pocket altimeter. This altimeter is made of leather plastic and metal...

Altimeter, E.R. Watts & Son

Brass altimeter, 8 cm in diameter x 3 cm depth with a glass cover. The...

Calculators

In the early 1970s, “handheld” or “pocket” calculators and computers were introduced. They were small...

Calculator, DIGI-matic

Hand held calculator Simpsons Sears Model Digi-matic 8 Model 41030, S/N 135988. This calculator is...