where is it? (American wire gauge vs. "Navy Shipboard")

[PFSchaffner]

This ordinary crimper/stripper seems to show two scales:
one marked "Commercial A.W.G." and  a parallel set marked
"Navy Shipboard." Am I reading this right? I was under the
impression that the Navy used AWG like everyone else.

[Aunt Phil]

Possibly AWG on one side and "Circular Mils" on the other.
Plastic handles say late 50s - early 60s.

Big war in that timeframe between American Pamcore Industries and everybody else to capture the insulated crimp market. 

Nobody won best I can tell.

[Billman49]

May just be the length gauge --------- that is Navy Shipboard, not the diameters...

Diameters may be in mm² - 6mm² etc.... standard UK wire sizes are 1.0, 1.5, 2.5, 4.0, 6.0, 10.0 etc...

[Chillylulu]

Awg 18 is pretty close to 1mm, but 10 gauge is only 2.6 mm.

Probably not metric, but that was one of my thoughts too.

Chilly

[oldtools]

http://www.seacoastusa.com/techwiregauge.htm

List Navy Standard conversions

[PFSchaffner]

Lo, there *is* a Navy Standard, which matches nothing else.
Thank you. 

[Aunt Phil]

Lo, there *is* a Navy Standard, which matches nothing else.
Thank you.

Well of course there is,  It's for all the parts in warehouses that are spares for ships scrapped after World War 2.