Reference Numbers (Part Numbers)
III FSC APPLICATION DATA
THE MANUFACTURERS DATA
GLASS, OPTICAL, JAN-G-174, TYPE 580-410, GRADE B
I'm unsure what it all means mate but that is what came off the American National Parts list I have saved
The prism you have is part of the prismatic gunsight for the 37mm cannon that was fitted to the M15-M15 A1 series of U.S. multi gun half tracks. They had a 37mm main gun and two .50 cal. water cooled machine guns on either side, below for the M15 and above for the M15 A1.
The same gunsight and 37mm gun was also fitted to the Stuart M3 A1 light tank.
'I do not think we can hope for any better thing now.
We shall stick it out to the end, but we are getting weaker of course, and the end cannot be far.
It seems a pity, but I do not think I can write more. R. SCOTT.
Last Entry - For God's sake look after our people.'
In memory of Capt. Robert Falcon Scott, Edward Wilson, Henry Bowers, Lawrence Oates and Edgar Evans. South Pole Expedition, 30th March 1912.
Nice one Ned, I wondered what "PERISCOPE M15A1,INTE" meant
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