Pair of NOS 13/16" 2-Flute End Mill Cutters by Chicago Aerial Industries

Matched pair of industrial end mill cutters accompanied by an original engineering drawing, presenting a complete shop-floor snapshot of design and execution. Each cutter features a 9/16" shank with compact multi-flute cutting heads coated in a translucent green protective compound. The coating preserves the cutting edges beneath while giving the tools a distinctive sculptural appearance. The shanks show precision machining with stamped size markings ("13/16"), and both retain clean, cylindrical forms for secure mounting. Included is a folded technical blueprint labeled for a "Mill Cutter" from Chicago Aerial Industries, Tool Engineering Department, adding contextual depth to the set and suggesting its use in a controlled production environment.

Shows light to moderate wear including surface marks and oxidation to the steel shanks, dust and minor imperfections in the protective coating, and handling wear to the paper blueprint with creasing, toning, and edge wear. The cutters appear well-preserved with no evident heavy use.

13/16" diameter, 9/16" shank, 3.5" overall length each

MM - 20243 - 041526

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