Archive of Collections

Details and Image

TypeModel No.MakerCountryConstruction
DateScale LengthArea of Use
Slide Adder
Six Slide Adders
USA and Hong Kong
Metal and Plastic
Adding and Subtracting

Notes: "Six slide adders, all different, and in various stages of completeness:
6-column Omega: adder and plastic slipcase only
9-column Omega: adder, stylus, instructions, plastic slipcase, original box (tatty)
Tasco: adder only
Ve-Po-Ad: adder, instructions, box (tatty)
Tom Thumb: adder, stylus, instructions, plastic slipcase
KalKometer: adder only

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