This 30 inch by 11 foot linen blueprint style engineering drawing was probably made up by John Pedersen at the Springfield Armory around 1925 when his proposed .275 auto-loader was being considered. It is marked in large Letters "Pedersen Self-Loading Rifle/Model GX/8 Shot Scale 3:1". The major portion of the drawing is a schematic view from the buttplate to the muzzle plus 4 cross-sectional views and two additional schematics of the receiver.

Very fine. The drawing unmarked and crisp with no obvious damage