Resulta E7 mechanical calculator
Channel: Jaap Scherphuis
Date: 02/07/2017

The Resulta E7 is a simple calculator for adding and subtracting. Versions of it were made from 1927 to 1969, and this one is from 1963.

For more information, visit my website:
https://www.jaapsch.net/mechcalc

0:00 Introduction
0:30 Addition
1:28 Clearing the register
1:42 Multiplication
2:33 Subtraction
3:59 Date
4:25 Outro