Title: Description and instructions for use of Weldon range finder, revised March 1, 1906, revised February 1, 1909.
Authors: United States.
Publisher: G.P.O.,
Year: 1911
Subjects: United States. Ordnance and ordnance stores Handbooks, manuals, etc.; Range-finding Handbooks, manuals, etc.; Fire control (Gunnery) Optical equipment Handbooks, manuals, etc.