Posted 4 months ago
Bugguy
(23 items)
Olson TL-472 Slide Ruler passed down from my father. It was made in Japan ~1965 of plastic for electrical calculations. This was part of a small number of slide rulers manufactured for Olson Electronics, Akron, OH. The ruler and leather case are in excellent condition. (I would have thought slide rules were extinct by the mid-60's)
