Concise Circular slide rule 28 English Version, made in Japan 1968 Q Street This is a C10s

This is a C10s

If you open a book about 19th century dietary remedies it would be hard to find one that does not mention beef tea

1 AUX (Hi-Z)

My original receipt is in the box

Concise Circular slide rule 28 English Version, made in Japan 1968 Q Street This is a C10sMy Dad gave me this when I was in H. S. in 1968, I never used it (and neither, I doubt, will you) I've owned this for 58 years, so I'm listing it as USED however its in as new condition with its original manual and packaging sleeve. English specifications for Slide Rule No. 27 This is the most popular circular slide rule, and it is a basic slide rule that can easily perform calculations other than addition and subtraction, such as multiplication,