Aberdeen chronograph
id:
aberdeen-chronograph-195-3265909
title:
Aberdeen chronograph
text:
The Aberdeen chronograph was the first portable gun chronograph, an instrument for measuring the muzzle velocity and striking power of a projectile fired by a gun. It was invented in 1918 by Alfred Lee Loomis at the U.S. Army's Aberdeen Proving Ground. The method prevalent at the time was the Boulengé chronograph, which relied on the projectile passing through two wire screens. Breaking the first screen would release a rod held by electromagnets. While the rod was free-falling, breaking the seco
brand slug:
wiki
category slug:
encyclopedia
description:
Portable gun chronograph
original url:
https://en.wikipedia.org/wiki/Aberdeen_chronograph
date created:
date modified:
2022-10-24T22:01:01Z
main entity:
{"identifier":"Q4667018","url":"https://www.wikidata.org/entity/Q4667018"}
image:
fields total:
13
integrity:
14