Image: Reflector reflex sight howard grubb 1901
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Description: 1901 diagram of a version of Howard Grubb‘s collimating reflector (reflex) sight designed to make a compact version suitable for firearms and other small equipment. Ambient lighting of the reticle was improved by placing it facing up and bouncing it off a relay mirror then off a concave partially silvered collimating mirror.
Title: Reflector reflex sight howard grubb 1901
Credit: Adapted from “Journal of the Military Service Institution of the United States, Volume 37 By Military Service Institution of the United States”, page 552, published July-August, 1905
Author: BRIG GEN TF RODENBOUGH USA EDITOR
Usage Terms: Public domain
License: Public domain
Attribution Required?: No
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