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Item#
Type
Model No.
Model Name
Maker
Country
Material
Diameter
Date
Condition
MEC005
Pocket
"1-3/4"
The Mechanical Engineer Pocket Calculator
Scientific Publishing Co..
UK
Nickel-plated brass
"2"
c. 1898-1900
C4
Notes:
"Small version of the calculator with 1-3/4"" scale disc. This specimen has no inscription or ""SWISS"" stamped on the center brass hub. Flange on small knob is thin like most others."
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Condition Code
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