This conversion calculator tranfers from the English system to the Metric system. It is a slide rule which shows conversions on both sides.
The calculator converts liquids, weight, temperature, linear measure, square measure and cubic measure.
Item has a few signs of use but is still highly functional. Slide works smoothly and holds its position once set. It measures 10" x 4".
Calculator was made by the Educational Aids Division of the Union Carbide Corporation, Tuxedo, N.Y. Copyright 1972.
It's a handy tool without batteries, electricity or confusing math programs to learn. Easy to use and understand.