Concise Circular slide rule 28 English Version, made in Japan 1968 Instrument I at one time had

I at one time had top mounted brackets supporting them

The shiny and reflective surface of the server (available in chrome or copper-plated steel) creates a contrast between the cover’s knob and the vessel’s handles

This is in superb working condition

MPN:  jhsf1-ct 150-1Size: 150 FeetColor: BlackBrand: HEATITSuitable for use on plastic and metal water pipes

not flicking a switch

Concise Circular slide rule 28 English Version, made in Japan 1968 Instrument I at one time hadMy 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,