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Radius measuring tool

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RussellT:
I'm wondering whether you could just use the existing blades and a conversion table.

Russell

mattinker:
Following the links, although it requires maths, this might be easier to make!

http://www.sharpfine.com/Indicator/radius-dial-gauge.html

Regards, Matthew

BillTodd:
All true.

I have written code for a 8 pin microchip PIC that can read the scales (it would just need some kind of display)  and could easily be modified to do the chordal calculation or table look-up, but  the beauty/brilliance of the angle blades is it requires no microprocessor, maths or tables. :thumbup:

BillTodd:
The geometry :

RussellT:
That's clever.  I assumed originally that they'd changed the electronics.

Russell

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