Advertising Ink Blotter for Friden ACG Electromechanical Rotary Calculator
This Item Generously Donated by Mr. Milo Del Gobbo

The Friden ACG-10 calculator was produced between 1954 and 1959. The Model ACG was a modified version of the Friden STW which provided a grand total function that allowed addition or subtraction of the number in the upper dials from a grand total contained in the lower dials.