1 1/4 48 Tooth Involute Spline Plug Gauges GO /NOGO DES 8010 DAC Aviation TIFCO

1 1/4 48 Tooth Involute Spline Plug Gauges GO /NOGO DES 8010 Douglas Aircraft TIFCO. Comes as shown in the photos. Wooden box is missing the lid. Likely from the MD 80 program.