Scientific Instruments > Calculating

Almost New UNIQUE Log-Log Slide Rule With Instructions.

Item#: SCI433

SOLD

 

This 10 inch slide rule is almost new in its original box including 16 pages instruction manual. The rule is made of mahogany wood with plastic coated paper with 6 scales: A, B, C and D, Log-Log and Reciprocal. The cursor is made of plastic with a single hairline. This type of cursor was used on the early Unique models. On the backside, a table lists values for sine, cos, tan and cot for 1 – 90 degrees. In addition, 22 trigonometrical formulas are printed. Decimal equivalents of fractions are printed on the trough. The rule is in very good condition. The ‘UNIQUE’ Company was established in England in 1920.