Thatcher's Calculating Instrument...
517

Thatcher's Calculating Instrument...

Currency:USD Category:Everything Else / Other Start Price:NA Estimated At:500.00 - 1,000.00 USD
Thatcher's Calculating Instrument...
Thatcher's Calculating Instrument
Model No. 4012, Keuffel & Esser Co., NY, Late 19th Century
The instrument raised on a wood stand mounted with directions and supported by two circular brass arms. The revolving cylinder inscribed Made by Keuffel & Esser Co., New York./ Patented by Edwin Thatcher, C.E. Nov.1st 1881, the base impressed with factory mark and 4012/ 4934.
Length: 22-1/4 in (56.5 cm)
$500 - $1,000