Concave shape prevents sliding; returns condensation to beaker
Classification: Clock or watch glass; glasses for noncorrective spectagles not optically worked; hollow glass spheres and their segments for the mnfctr ofsuch glasses
NSN 6240-01-126-9167
NSN 5935-01-634-0668
NSN 7035-01-245-7973
NSN 5835-01-414-3258
NSN 5960-01-415-3574
NSN 5985-00-738-8066
NSN 6685-01-005-8618
NSN 5945-00-269-3706
NSN 6650-01-171-8380
NSN 5996-01-288-5955
NSN 5960-00-942-0934
NSN 5925-01-625-8942