How Can One Make a Mechanical Calculator?
I have recently plotted out complete plans for a chiming, self-rewinding clock, made entirely out of legos. Now I want a new challenge. Does anybody out there know where I may find schematics of the earlier, larger mechanical calculators? Hence before the Curtas came into popularity. I would like to make it add, subtract, multiply, and divide, and possibly find the scuare root of a number.