Brical British calculator

Made:
1900-1909 in Stoke Newington
'Bri-cal' adding machine by, The British Calculators, Ltd, in case; adds from 1/2d to #500, two bone styluses. 'Brical'

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Science Museum Group Collection
© The Board of Trustees of the Science Museum

'Bri-cal' adding machine by, The British Calculators, Ltd, in case; adds from 1/2d to #500, two bone styluses. 'Brical'
Science Museum Group Collection
© The Board of Trustees of the Science Museum

"Bri-cal" adding machine by, The British Calculators, Ltd, in case; adds from 1/2d to #500, two bone styluses

Brical' adding machine in case with two bone styluses. Patented by H and M Dickinson, the 'Brical' was Britain's answer to the French circular 'Tronset' instrument and is a modification of it. It was designed to add sums of money from 1/2d to £500.

Details

Category:
Mathematics
Object Number:
1909-166
Materials:
brass (copper, zinc alloy), fish skin, plastic (unidentified), silk, steel (metal), velvet and wood (unidentified)
Measurements:
open: 15 mm x 155 mm x 315 mm, 0.62 kg
closed: 25 mm x 155 mm x 155 mm, 0.62 kg
type:
adding machine (stylus) and adding machine (stylus) and adding machines (stylus)
credit:
J.C. Stevens Auction House