For sale is an exceptionally rare, heavy-duty military-issued surveyor's or engineer's plumb bob, weighing a substantial 1.5kg. This industrial-grade plummet features a solid, heavy-set body designed natively with a direct thread-through string loop.

The shoulder features crisp historical markings: the official British Commonwealth Military Broad Arrow property stamp flanked by the letters G I (denoting issuance under the colonial British Government of India administration).

An outstanding, highly specialized piece for collectors of premium militaria, surveying history, or rare antique trade tools.