Unique log-log slide rule
Unique log-log slide rule
Obtained from the UK
This is a slide rule made for trigonometric work. The front has the log-log scale as well as those relevant in trigonometric work. The backside contains a table of sine / cosine / tangent values as well as the most common trigonometric functions.
unique log-log
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Unique log-log slide rule
Obtained from the UK