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Details and Image
Type
Model No.
Maker
Country
Construction
Material
Date
Scale Length
Area of Use
Disk
"Flank Spotting Rule, M1"
Bausch & Lomb
USA
Stainless Steel
1941
Dia. = 26.7 cm
Military
Notes:
1) Used for gun pointing calculations for the M1 Anti-aircraft M1 gun 2) Tripod mounted with a spotting scope 3) See images from the Army maintence manual
Image 1
Image 2
Image 3
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Image 5
Image 6