This is a support truss from the lunar module.
It is amazingly light. It must be close to (or even less than) one pound, but I don't have a scale that is that small. Comparing my body weight with and without the truss is negligible.
The truss is 21 inches long and 1 3/8 inches diameter. There is a very bold and clear stamp in red ink on both sides with part # LDW280-18847-19 A3.
Each end fitting is attached with 12 pieces of tiny hardware which are each sealed with a sealer. Curiously, it seems that each of the (24 total) hardware items are each individually stamped with a red inspector stamp (#621) and each of the main truss part number stamps is folowed by another inspector stamp #1459. The truss ends that are into the tubing are also cleanly sealed with some type of composite sealer.
If you want to know how much this weighs, take it to the local post office - they should have a scale to measure masses in grams.
Posted by: Alan Erskine | April 24, 2008 at 11:05 AM