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308 Winchester Headspace Gauge Set GO and NO-GO

...e closes on a GO gage, the chamber will accept ammunition that is made to SAAMI maximum specifications. The GO gage is essential for checking a newly-reamed chamber in order to ensure a tight, accurate, and safe chamber that will accept SAAMI maximum ammo..
PRECISION MACHINED: Manufactured from top-quality, hardened steel and precision ground to ANSI and SAAMI tolerances. Headspace tolerance ground to a very exacting ±.00015. Each Headspace Gage thoroughly inspected with NIST-certified measurement tools to ensure the highest quality product..

MAXIMUM LENGTH: The Forster NATO Maximum rifle chamber gage checks to see that the rifle does not have excessive headspace, which could lead to dangerous pressure problems. The NATO Maximum Headspace Gage measures 1.6455".
PRECISION MACHINED: Manufactured from top-quality, hardened steel and precision ground to ANSI and SAAMI tolerances. Headspace tolerance ground to a very exacting ±.00015. Each Headspace Gage thoroughly inspected with NIST-certified measurement tools to ensure the highest quality product..
MEASURING MEANINGFUL HEADSPACE: Properly speaking, and for safety purposes, one measures “headspace” as the difference between the length of a standard cartridge, as represented by a gage, and the gun’s actual chamber length , when the head of the cartridge is flush against the bolt face..

Made from the finest quality steel available.
Each gage has leaves for measuring surfaces for convex and covace radii.
Useful for tool and die makers, machinists, screw machine operators and other mechanics to layout and check radii of tools, dies, etc..

Made from the finest quality steel available.
Each gage has leaves for measuring surfaces for convex and covace radii.
Useful for tool and die makers, machinists, screw machine operators and other mechanics to layout and check radii of tools, dies, etc..
Overall length (when closed): 2-3/4'' long.

...or it may have excessive headspace. To determine if there is excessive headspace, the chamber should then be checked with a FIELD gage. The NO-GO gage is a valuable tool for gunsmiths’ reaming new chambers, in order to ensure tight and accurate headspace.
PRECISION MACHINED: Manufactured from top-quality, hardened steel and precision ground to ANSI and SAAMI tolerances. Headspace tolerance ground to a very exacting ±.00015. Each Headspace Gage thoroughly inspected with NIST-certified measurement tools to ensure the highest quality product..
MEASURING MEANINGFUL HEADSPACE: Properly speaking, and for safety purposes, one measures “headspace” as the difference between the length of a standard cartridge, as represented by a gage, and the gun’s actual chamber length , when the head of the cartridge is flush against the bolt face..

Durable Construction: This block set is made of the finest grade of high carbon / chrome steel that has a low coefficient of thermal expansion.
fully stress relieved and hardened to 65 RC.
Accuracy: The gage block set is lapped and polished to a very low micro-surface finish.
81 Piece Set: These gage blocks come with 9 blocks 0.1001″ thru 0.1009″, steps of 0.0001″.
49 blocks 0.101″ thru 0.149″, steps of 0.001″.
19 blocks 0.050″ thru 0.950″, steps of 0.050″.
and 4 blocks 1.000″ thru 4.000″, steps of 1.000″.
Set Includes: The set of gage blocks includes a deluxe fitted case and certificate of inspection traceable to the National Institute of Standards & Technology.

81 PCS/SET SQUARE GAGE BLOCK SET w.NIST Equivalent certificate, GRADE B.
Description: 81 pcs/set steel precision SQUARE gage block set, grade B--w. tollerance of 50 millionth of inch. All block mirror polished, with serial number and size, WITH GAGE HOLE Complete with NIST equivalent certificate of calibration showing deviation of each block. Meets or exceed Fed. Spec. GGG-G-15C and Conform to MIL-STDD-45662A.
9 blocks: .1001" - .1009" in .0001" steps 49 blocks: .101" - .149" in .001" steps 19 blocks: .050" - .950" in .050" steps 4 blocks: 1.000" - 4.000" in 1.000" steps Fitted in heavy duty and precision made wooden box..

350 LEGEND: Use to check headspace of 350 Legend..
RIMLESS CARTRIDGE HEADSPACE: The proper use of Headspace Gages is the most reliable way to test rifle chamber length. Headspace in a rimless cartridge is the distance between the bolt face and a datum line, determined by SAAMI, where the front of the cartridge rests on its shoulder when the bolt is closed..
GO: Corresponds to the minimum chamber dimensions. If a rifle closes on a GO gage, the chamber will accept ammunition that is made to SAAMI maximum specifications. The GO gage is essential for checking a newly-reamed chamber in order to ensure a tight, accurate, and safe chamber that will accept SAAMI maximum ammo..
PRECISION MACHINED: Manufactured from top-quality, hardened steel and precision ground to ANSI and SAAMI tolerances. Headspace tolerance ground to a very exacting ±.00015. Each Headspace Gage thoroughly inspected with NIST-certified measurement tools to ensure the highest quality product..
MEASURING MEANINGFUL HEADSPACE: Properly speaking, and for safety purposes, one measures “headspace” as the difference between the length of a standard cartridge, as represented by a gage, and the gun’s actual chamber length , when the head of the cartridge is flush against the bolt face..

[Accuracy]: AS-2 003e Grade B : +/- 0.000050". Blocks manufactured under carefully controlled conditions, allowing for the highest degree of accuracy when used at room temperatures of 68 degrees F (20 degrees C).
[Material]: Set made of fully seasoned alloy tool steel with hardened to 65 RC to provide both long wear and resistance to stains and rust.
[Application]: Gage blocks are commonly used to calibrate fixtures and precision instruments in workshop, inspection, and dimensional metrology applications, to inspect tools such as mounting tools, cutters, fixtures, and mechanical parts, and in the gage manufacturing process itself. Grade AS-2 gage blocks are commonly used in workshops for calibrating and inspecting mounting tools and cutters..

【DEDICATED HANDLE】 Our pin gage handle with dedicated handle for pin gage, go-no go gage and plug gage..
【CLAMPING RANGE】 There are optional clamping range from 0.3mm to 16mm for you to choose..
【ALUMINUM ALLOY】 The pin gage handle is made of aluminum alloy material, with delicate appearance and long durability..
【EASY TO USE】 The pin gage holder with simple structure, and detachable design, is easy to use..
【BEAUTIFUL APPEARANCE】 The pin gage handle with green and red color of each end, which is beautiful and convenient to use..