This bakelite and brass Fuller's cylindrical slide rule with serial...
Fowler & Co. in Manchester made this pocket calculator during the...
This mint condition Type I model with serial number 47218 was manufactured...
Otis King Logarithmic Calculator Model 'L'. This is a logarithmic...
This ‘Addiator’ Calculating Machine was made for adding and...
This is a Faber-Castell 10 inch slide rule from the 1960’s. Made...