Author Archives: Ed Titanich

Chain, Gunter’s

The Gunter’s Chain, designed in England by Edward Gunter in 1620. It was one chain...

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...

Calculator Manual, DIGI-matic

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

Calculators Manual

In 1642, Blaise Pascal is credited with designing one of the earliest forms of a...

Altimeter, E.R. Watts & Son

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

Altimeter, Thommen Everest

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

Altimeter, American Paulin Systems

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

Altimeter, Topley

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

Altimeter, Short & Mason

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