Jump to content

File:Reflector reflex sight howard grubb 1901.png

Page contents not supported in other languages.
This is a file from the Wikimedia Commons
From Wikipedia, the free encyclopedia

Original file (1,338 × 461 pixels, file size: 197 KB, MIME type: image/png)

Summary

Description
English: 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.
Date
Source 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
Other versions

Licensing

Public domain
Public domain
This media file is in the public domain in the United States. This applies to U.S. works where the copyright has expired, often because its first publication occurred prior to January 1, 1929, and if not then due to lack of notice or renewal. See this page for further explanation.

United States
United States
This image might not be in the public domain outside of the United States; this especially applies in the countries and areas that do not apply the rule of the shorter term for US works, such as Canada, Mainland China (not Hong Kong or Macao), Germany, Mexico, and Switzerland. The creator and year of publication are essential information and must be provided. See Wikipedia:Public domain and Wikipedia:Copyrights for more details.

Captions

Add a one-line explanation of what this file represents

Items portrayed in this file

depicts

28 April 2011

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current14:51, 28 April 2011Thumbnail for version as of 14:51, 28 April 20111,338 × 461 (197 KB)Fountains of Bryn Mawr

The following 2 pages use this file:

Global file usage

The following other wikis use this file:

Metadata