Heat treated
A piece of transparent material specifically designed to be placed directly in front of a dial or scale to protect it from foreign matter. It is cut to size and may include a frame. It may have an index line or other marking. See also window, observation; and dial, scale.
Classification: Clock or watch glass; glasses for noncorrective spectagles not optically worked; hollow glass spheres and their segments for the mnfctr ofsuch glasses
NSN 5985-01-482-5102
NSN 6620-01-383-6494
NSN 6685-01-654-8070
NSN 5915-01-608-5264
NSN 5895-01-032-4938
NSN 6240-01-438-8044
NSN 5960-00-647-4989
NSN 2925-00-422-5159
NSN 6320-00-270-8222
NSN 6135-00-182-7008
NSN 5990-00-070-9608
NSN 6320-01-519-8767