Mathematics Antique Smith and Dolier Arithmetical scales. Simple Addition

Mathematics antique - Smith and Dolier Arithmetical scales. At 5 rods, out of 8 (but with a little mathematical logic, using the instructions, the missing rods could be surmised and thus recreated). A good project for mathematics students! An ingenious set of boxwood rods designed to teach Addition.

With instructions printed on the underside of the hinged lid. By rotating the sticks, various tasks can be calculated and the correct result can then read on another rod.

Designed for the use of schools (group work up to 4 students) and private families. Phelps, London; Thomas Taylor, Liverpool.

Wrightson and Webb, Birmingham; and all booksellers. These are a rare surviving example of a Georgian mathematical teaching aid. Similar sets are held in the collections of The Science Museum, London.

Although incomplete they are in very good condition although almost 200 years old. Dimensions 32cm x 12.3cm x 2.2cm; Weight.

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