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Strictly Surveying
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Just messing around on the internet and came across these. Sometimes getting everyone in a geometry class up to speed was a challenge.
The Kern Circular Protractor has an interesting history. as does the protractor and parallel rule which is connected to a PA surveyor. Times have indeed changed.
https://americanhistory.si.edu/collections/object-groups/protractors/surveying
Posted : 14/06/2020 11:56 am
Thanks for the post?ÿM.T.?ÿ?ÿIt brought back old memory's for a couple almost look like a RDP (range deflection protractor)
used in FDC (fire direction control) in Artillery.
JOHN NOLTON
Posted : 14/06/2020 8:18 pm
