Calculator
Category
Household and miscellaneous
Date
Unknown
Materials
Brass and steel.
Measurements
11 mm (Depth); 135 mm (Diameter)
Collection
Penrhyn Castle, Gwynedd
NT 1700702
Summary
Calculator. A calculator for adding sums of money in pounds, shillings and pence up to £1,000. A brass body contains movable slotted steel discs which are rotated to the required positions.
Marks and inscriptions
On face of holder: THE BRI CAL / PATENT On face of holder above apertures: TOTAL £ s d Side of calculator: 19/6/42 / D.McMiol Sgt + RTR On face around curved slots: [markings 1/2 to 12, 1 to 19, 1 to 25, and 50 to 1000, for pence, shillings and pounds]