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Diameter Tape

N

Nemo

New member
I was writing a short artile for the expanded version of Exploring Civil War Campsites and talking to Artillery Expert Pete George about how to authenticate cannonballs at garage sales, etc.. Frequently these "cannonballs" are old rolling mill balls, old high school shot puts, or iron fence post finials. Pete got me on to a new device for measuring the diameter of unknown balls at such sales. It called a diameter tape.. It measures the diameter directly by using the circumference divided by Pi. They are available at most hardware stores and from the Internet for less than $10. Stanley's model is 33-115.

Anyone else use this device?
Dave Poche
 
Thanks for posting. It is invaluable to anyone collecting artillery projectiles.
David@Dixie
 
Pete George has had a chance to look at this post and liked it. His only suggestion is that I show a picture of the tape. It's about pocket watch size. Could not resist including a picture of the Cyrus Alger 8-inch mortars at the James River.

HH
Dave Poche
 
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