A collection of three different Microporous filters for the fuel system of the lunar module. These things are amazing works of art. They are heavy and made with extremely fine workmanship and materials.
The smallest one reads: "Filter, in-line. Design control no. GAEC LSC400F0108-5. Serial no. 7-1146. Contract np. NAS9-1100. Unit no. Ass’y no. F-6140. Microporous filter. Anaheim, Calif. 10 Micron ABS. OP. press 4000 PSIG. Max. US. CL "N""
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