Tempered to resist cracking especially in ndt situations
An item fabricated of a special glass or other suitable material for the purpose of transmitting ultraviolet light and withholding all other wave lengths of light, particularly those at the visible region. It is designed to fit into the aperture of a suitable light source.
NSN 6135-01-632-3365
NSN 6610-01-170-2905
NSN 6685-01-056-3089
NSN 5965-01-201-1580
NSN 5920-00-660-6998
NSN 5998-01-534-0002
NSN 4140-01-571-7457
NSN 5895-01-200-0353
NSN 6145-01-262-6935
NSN 5950-00-377-9186
NSN 5990-00-484-3189
NSN 5960-01-179-9350