MIL-F-9329B, MILITARY SPECIFICATION: FILTERS, LIGHT PHOTOGRAPHIC, GENERAL SPECIFICATION FOR (02 APR 1980) [NO S/S DOCUMENT]

MIL-F-9329B, MILITARY SPECIFICATION: FILTERS, LIGHT PHOTOGRAPHIC, GENERAL SPECIFICATION FOR (02 APR 1980) [NO S/S DOCUMENT]., This specification covers the requirements for four types of light filters for photographic use.