U.S. military–issued pneumatic reciprocating saw, Model AS-221, manufactured by Wright Power Saw and Tool Corp., a subsidiary of Thomas Industries, Inc., Sheboygan, Wisconsin. This example retains its government-inspected data plate and original Federal Stock Number, confirming official Department of Defense procurement.

The data plate identifies the tool as:

A partially intact instruction sticker remains affixed, detailing correct air pressure (80–100 PSI), oiling procedures, and operating instructions. The saw is marked with U.S. Patent No. 2,598,480, placing its design and procurement firmly in the early Cold War period.

Measuring approximately 58 inches in length and weighing about 22 lbs as configured, this is a large, industrial-grade pneumatic saw intended for heavy-duty woodworking and structural support tasks. In U.S. military usage, tools of this class were associated with base, depot, and field environments, where compressed air systems were already in use and spark-free operation was required.

Based on the FSN system, patent date, and manufacturer branding, this saw is most consistent with 1950s–1960s Department of Defense service, with usage most plausibly associated with U.S. Air Force base and civil engineering operations, though it was not branch-exclusive.

This example is best suited as a collector, museum, or institutional display artifact, representing Cold War–era military industrial tooling rather than a modern working saw.