Fowler's Calculator Pocket Watch - Cubes & Cube Roots
Physical Object
2019.07.02.06
The Scientific Publishing Co Fowler’s Patent Pocket Calculator was patented in 1910 (5528/1910). It is 2.7 inches diameter and the front scales are for multiplication (3 scales), logs and sines. The rear scales are for finding cubes and cube roots. The crown drives the front dial and the button in the centre of the back drives the rear dial and the pointer (broken) over the front dial. This style of calculator was only made in the 1910-1914 period. It has a maroon card case. 