An item of rigid material designed to cover a crucible, ignition, laboratory, it may have a handle-lifting device, or opening for delivery tube.
NSN 5990-01-187-8594
NSN 6150-01-381-1345
NSN 5835-01-200-7153
NSN 5960-01-622-0393
NSN 6130-01-642-4281
NSN 5855-01-630-4299
NSN 6135-00-816-9052
NSN 5855-00-991-0096
NSN 6685-00-256-0240
NSN 4140-01-311-4769
NSN 6645-01-108-3457
NSN 5999-00-999-4435