An item generally designed for mounting in an aircraft fuel tank. It is used to measure the fuel density during the flight.
NSN 6320-01-544-6447
NSN 6110-01-644-9328
NSN 6610-01-318-6713
NSN 5920-01-588-8770
NSN 5996-01-547-7386
NSN 5905-00-020-8548
NSN 5975-00-269-4365
NSN 5996-01-054-3226
NSN 5835-00-279-2887
NSN 6650-01-229-7500
NSN 5950-00-152-7941
NSN 5920-01-411-4745