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 5905-01-412-0472
NSN 5855-01-307-1159
NSN 5895-00-285-6622
NSN 5985-01-634-0635
NSN 6135-01-074-8220
NSN 5855-01-258-5161
NSN 6320-01-607-1491
NSN 6150-01-133-3289
NSN 6220-01-098-1808
NSN 5945-01-483-5109
NSN 7035-00-753-0695
NSN 6145-00-448-1636