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Accoson_Calculator (source ArthurJohnsonAndSonsAuctioneers via Federico Benito de los Mozos)
Accoson_Calculator (source Arthur Johnson and Sons Auctioneers and thank you to Federico Benito de los Mozos)


The Accoson calculator is extremely rare, and a beautiful early example of a pre-decimal British pounds, shillings, and pence calculator.


Accoson Model B Adding Machine (source Karl Hyde)
Accoson Model B Adding Machine (courtesy Karl Hyde)


The Model B sports a double configuration for increased capacity to ten thousand pounds!


Accoson Adding Machine Instruction Sheet (source Karl Hyde)
Instruction Sheet: Rules for working the Accoson Adding Machine Models A and B (courtesy Karl Hyde)


Accoson Adding Machine Case Model B (source Karl Hyde)
Case for the Accoson Adding Machine (courtesy Karl Hyde)


Accoson Calculator For Compound Addition Ad L .Grigg and Co. London (courtesy: V. Geppert)
Ad for the Accoson Calculator For Compound Addition Model A
L .Grigg and Co. 11, Worfield Street, Battersea, London
Popular Science Siftings Magazine 1910 (courtesy V. Geppert)
 
Shown above and below is an ad for the Accoson Calculator Model A, which appears to be similar to the BriCal Model C (see the BriCal page) but with the interesting addition of a ratchet arm on the left side to count up to a 100 £. If you have any information or photos about this calculator, please send me a note. Danke schön to Volker Geppert for providing these images.
 

Accoson Calculator For Compound Addition Ad L .Grigg and Co. London (courtesy V. Geppert)
Advertisement for the Accoson Calculator For Compound Addition Model A
L .Grigg and Co. 11, Worfield Street, Battersea, London
Popular Science Siftings Magazine 1910 (courtesy V. Geppert)