Hand-Cranked Mechanical Calculator, c. 1912, Occasionally Correct

£340

A Burkhardt-pattern hand-cranked mechanical calculator in brass and steel; eight-digit display; full subtraction carriage.

Notes

Adds reliably. Subtracts most of the time. Multiplication is "ceremonial". Sold to enthusiasts only.

Shipping

Wooden crate, double-boxed, by van. The crate weighs as much as the calculator.