Geometrical instruments – Gauge – Target – weapon – or weapon projectile
Patent
1991-12-02
1992-12-15
Will, Thomas B.
Geometrical instruments
Gauge
Target, weapon, or weapon projectile
33833, 33794, G01B 322
Patent
active
051705699
ABSTRACT:
An apparatus for measuring the distance between an outwardly extending planar surface on a head space gauge and a planar surface surrounding the head space gauge on the barrel of a gun. This distance is used to calculate the head space of a gun. A housing is provided for abutment with the planar surface on the barrel and has an opening for receiving a sleeve of a dial indicator. A set screw arrangement is provided for securely holding the sleeve of the dial indicator in a desired relationship for the measurement process.
REFERENCES:
patent: 2483089 (1949-09-01), Ferguson
patent: 2502613 (1950-04-01), Zanolio
patent: 2544158 (1951-03-01), Henderson
patent: 2553704 (1951-05-01), Eckel
patent: 3217417 (1965-11-01), Love et al.
patent: 3780438 (1973-12-01), Styczynski
patent: 4248132 (1981-02-01), Blomseth
patent: 4577412 (1986-03-01), McKinney
patent: 4608762 (1986-09-01), Varner
patent: 4653191 (1987-03-01), Gasser
patent: 4918825 (1990-04-01), Lesh et al.
Copy of pages from 1991, Brownells, Inc.--Catalog No. 44 front of catalog, 2nd page, and two page from catalog showing prior art.
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