5220-00-237-2861 (24X30)
NSN 5220-00-237-2861 (NIIN 00-237-2861) is a surface plate in Federal Supply Class 5220, Inspection Gages And Precision Layout Tools — a rectangular or square precision tool having a flat working surface(s) of specific flatness. Manufacturer part number 24X30 (Supfina Machine Co Inc, CAGE 59025).
NIIN assigned January 1961; DEMIL A (none required).