Measuring tool---how and for what? | ||
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Posted 6 years ago
Glad
(2 items)
Some sort of measuring stick, maybe?? This was found in old barn. Rounded, but flat sides with the numbers-Metal bolt/top at one end. It has No 46 stamped on it, and it's about 24 inches long.
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This device is not for measuring, it's a calculating device. It can be used, with a book of charts, to create angles and do other calculations. It can be used for navigating, shipbuilding, and other functions where angles are needed. It has a fancy name which escapes me just now.
Each set of divisions gets progressively longer so, for example, start at point "A" on a straight line. Measure 8 units on any scale, say, number three, along that line. Call that point "B". At "B" make a 90 degree vertical line. When you get to the point on the vertical line where scale number seven, for example, also indicates 8 units - call that point "C". The book will tell you the angle between A-B and A-C.
Don't know for what, but it would look great on the wall above my workbench...:)
The next question would be...what is it worth?
There doesn't seem to be a solid value for anything anymore. Recently I sold a nice group of old, handmade rules and measures. I was extremely disappointed in the prices realized at auction. Your piece would bring anywhere from $10 to $100 depending on whether or not at least two people who appreciated it showed up. Don't clean or re-finish is in any way except for a coat of non-acid wax if you want to protect it.
Thank you all for the information...much appreciated.
I kept thinking I had seen one before, now I know.
I is a lumber or timber gauge scale rule'
Cheers