Describing a part is often simpler than looking it up for a description. But some parts require specifics to avoid confusion. The standard nomenclature (language) for describing each part can be found in the following manuals.
Be aware these manuals have two drawbacks. First, the authors sometimes varied from the standard nomenclature or omitted a few parts. Second, what is shown in the manual was current at the time of publication. Given the ongoing R&D to improve this equipment sometimes the part actually used was different than what the manual shows.
T120/M1 Sniperscope & Snooperscope sets
TM 5-9340 SNIPERSCOPE and SNOOPERSCOPE (September 1944)
Early M2 Sniperscope sets
TM 5-9341 SNIPERSCOPE Model M2 (June 1945)
ENG 9-9341 List of all Service Parts for SNIPERSCOPE M2 (July 1945)
Late M2 Sniperscope sets
TM 5-9341A - Repair Instructions for SNIPERSCOPES Models M1 and M2 (August 1951)
note: this manual is also for parts for the earlier M1 and M2 Sniperscopes BUT using the parts and standards of 1951.
M3 Sniperscope sets
TM 5-9342A - Repair Instructions for SNIPERSCOPE, Infrared, Set No. 1, 20,000 Volts (April 1952)
TM 5-1090-202-25P - Organizational, Field, and Depot Maintenance Repair Parts and Special Tool Lists; SNIPERSCOPE: INFRARED FSN 1090-034-7788; RACK: BATTERY CHARGING W/RECTIFIERS; FOR M2 and 20,000 VOLT SNIPERSCOPE FSN 6130-377-0401 (January 1962)
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Most, but not all, of these manuals are available as reprints sold by Eric Nicolaus at http://www.nicolausassociates.com/M1_Carbine.htm" rel="nofollow - http://www.nicolausassociates.com/M1_Carbine.htm . Reasonably priced, excellent quality, cannot be mistaken or sold as authentic, and given the value of the originals a much better choice for reference and reading.
I'm not aware of anyone else who has copies available.
Jim
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