6 Calculating Machines

I think it’s model k-16 but I’m not sure Seems to be in working condition although I really didn’t thoroughly check Please look at photos

Antique Monroe Calculating Machine

National Museum of American History

The Calculators Brief History: When was the calculator invented

How do calculators work? - Explain that Stuff

A brief history of counting machines - lcamtuf's thing

Primary Calculators - Set of 10

Inside a mechanical calculator

I Am Dangerously Close To Buying This Soviet Mechanical Calculator

Sharp Calculators – sharpcalculators

The History Of The Calculator: When was the Calculator First Invented?

Antique Vaucanson Mod. AVA13 Calculating Machine. France, 1930s

I think it’s model k-16 but I’m not sure Seems to be in working condition although I really didn’t thoroughly check Please look at photos

Antique Monroe Calculating Machine

This Amazing 70 Year Old Calculating Machine