Todd Visible Adding Machine - 1926

"Here is a GIF of information about Todd Visible, scanned from "The Business Machines and Equipment Digest", 1927, by Equipment-Research Corporation. Copies of Todd Visible user manual are sold by Ernie Jorgenson."

Source: Courtesy of Timo Leipala

"Made by the Todd Visible Adding Mach,Co and patent date 1921,this old forerunner of the modern calculator is in excellent condition,It has a fold over cover when not in use.9 rows of numbers 0 - 9,with keys to clear and total. Weight 8 lbs."

Courtesy of: Emery J. Pendleton

X-Number World