Chamber Gauges - Made in Germany
Our gauges are made from hardened steel and perfectly ground to the exact dimensions given by CIP or customers specification.
We check the dimensions of every chamber gauge on a modern optical CNC-testing device.
Our chamber gauges are used by gunsmiths as well as by proofhouses all over the world.
We have not only headspace gauges in minimum and maximum but also gauges for the forcing cone and, usually used by the proof houses, gauges for the neck diameter and length and gauges for the body diameter in the chamber.
GAUGES FOR RIFLE CHAMBERS
SHOULDER GAUGES FOR RIFLE Chambers
This gauge is used to check the minimum depth of the chamber for bottlenecked cartridges. The gauge is commonly called “GO-Gauge”. If the chamber has the minimum length, the action of the gun must close with the minimum gauge inside. The position of the shoulder gives the minimum length. When the cartridge has neither rim nor belt, the shoulder gauge is the headspace gauge. This gauge is available as minimum type and maximum type. They are always used as a pair. The dimensions of the gauges are intended for bolt actions. For self-loading guns or break-open-guns there are sometimes different dimensions. Optional there are sets of gauges with a graduation of 0,02mm available, to determine the exact headspace dimension.
This gauge is used to check the maximum depth of the chamber for bottlenecked cartridges. If the chamber has the maximum length, the action of the gun must not close with the maximum gauge inside. The gauge is commonly called “GO-Gauge”. The position of the shoulder gives the maximum length. When the cartridge has neither rim nor belt, the shouldergauge is the headspace gauge. This gauge is available as minimum type and maximumtype. They are always used as a pair.The dimensions of the gauges are intended for boltactions. For self-loading guns or break-open-guns thereare sometimes different dimensions. Optional there are sets of gages with a graduation of 0,02mm available, to determine the exact headspace dimension.
This gauge is used to check the minimum depth of the chamber for Weatherby cartridges. If the chamber has the minimum length, the action of the gun must close with the minimum gauge inside. The position of the shoulder gives the minimum length. Due to the fact, that all Weatherby-cartridges are belted, the headspace is to be checked at the belt.
This gauge is only available as minimum type.
For a whole series of cartridges of U.S. origin, the maximum length dimensions of the cartridge exceed the minimum length dimensions of the chamber. Particularly in the case of break-barrel guns, which are not very widespread in the USA, it happens in these calibers that the bolt of the gun cannot be closed, although the cartridge and the chamber comply with the prescribed dimensions.
To solve this problem, CIP added these dimensions “delta” to the length of the cartridge bearings. The cartridge bearings can therefore be manufactured longer by this difference. To check these dimensions, there are the “Delta” gauges, which are manufactured longer by this difference. This gauge checks the minimum depth L1 and L2 + “Delta” and thus the position of the shoulder If the bearing depth is correct, it must be possible to close the bolt of the gun when the minimum shoulder gauge is inserted.
RIM GAUGES FOR RIFLE Chambers
These gauges are used to determine the minimum or maximum depth of the rim of rifle chambers. The control of the depth of the rim recess is important for the headspace tolerance. The correct depth of the rim is reached when the gun can be closed with the minimum gauge inside the chamber and can not be closed with the maximum gauge inside. This gauge is available as minimum type and maximum type.
They are always used as a pair.
Gauges for the Neck Diameter of Rifle Chambers
This gauge is used to check the minimum depth L3 and minimum diameter H2 of the neck of rifle cartridges. If the neck has the minimum length and minimum diameter, the action of the gun must close with the gauge inside. The length L3 and the diameter H2 are minimum.
This gauge is only available as minimum type.
BELT GAUGES FOR RIFLE CHAMBERS
This gauge is used to check the minimum depth of the belt recess of the chamber for the belted cartridges. If the belt recess has the minimum length, the action of the gun must close with the minimum gauge inside. The dimension of the belt recess is the minimum length. When a cartridge has a belt, the belt gauge is the headspace gauge. This gauge is available as minimum type and maximum type. They are always used as a pair.
Optional you can obtain a data sheet, giving the exact dimensions of your numbered gauge, usually necessary when a quality management is in progress.
This gauge is used to check the maximum depth of the belt recess of the chamber for the belted cartridges. The action of the gun must not close with the maximum gauge inside. Then the dimension of the belt recess is smaller then the maximum length. When a cartridge has a belt, the belt gauge is the headspace gauge.
This gauge is available as minimum type and maximum type. They are always used as a pair.
Optional you can obtain a data sheet, giving the exact dimensions of your numbered gauge, usually necessary when a quality management is in progress.
Freebore Gauges for Rifle Chambers
This gauge is used to check the minimum depth of the forcing cone of rifle cartridges. If the forcing cone has the minimum length, the action of the gun must close with the gauge inside.
The position of the forcing cone gives the minimum length. This gauge is only available as minimum type.
Optional you can obtain a data sheet, giving the exact dimensions of your numbered gauge, usually necessary when a quality management is in progress.
Body Gauge P1 - P2 for Rifle CHambers
This gauge is used to check the minimum diamter of the chamber. If the chamber has the minimum diameter, the action of the gun must close with the body gauge inside.
Optional you can obtain a data sheet, giving the exact dimensions of your numbered gauge, usually necessary when a quality management is in progress.
GAUGES FOR SHOTGUN CHAMBERS
These gauges are used to determine the minimum or maximum depth of the rim of shotgun chambers. The control of the depth of the rim recess is important for the headspace tolerance, which is 0,20mm for breech and 0,35mm for self loading shotguns. The correct depth of the rim is achieved when the gun can be closed with the minimum gauge inside the chamber and cannot be closed with the maximum gauge inside.
This gauge is available as minimum type and maximum type. They are always used as a pair.
This gauge is used to determine the depth of shotgun chambers. If the chamber has the exact length, the marking ring must correspond with the breech face. This gauge is available as minimum type and maximum type. The diameter and the length are minimum.
The gauge shows the minimum length of the chamber for all lengths of the corresponding caliber.
This gauge checks the diameter D of the camber. Shotgun chambers have a minimum and a maximum diameter, fixed by the CIP. The gauge should reach the breech face with the first ring for the minimum diameter. The second ring shows the maximum diameter.
GUN CARTRIDGE BEARING GAUGES
SHOULDER GAUGES FOR PISTOL CARTRIDGE BEARING
This gauge checks the minimum depth L1 and L2 and thus the position of the shoulder. If the shoulder depth is correct, it must be possible to close the bolt of the gun when the minimum shoulder gauge is inserted. The position of the shoulder corresponds to the minimum dimensions. The gauge is manufactured in minimum and maximum versions. They are always used in pairs. Gauge sets with increments of e.g. 0.02mm are available as an option in order to be able to determine the breech distance precisely.
This gauge checks the maximum depth L1 and L2 and thus the position of the shoulder If the bearing depth is correct, it must not be possible to close the bolt of the gun when the maximum shoulder gauge is inserted. The position of the shoulder corresponds to the maximum dimensions. The gauge is manufactured in minimum and maximum versions. They are always used in pairs. Gauge sets with increments of e.g. 0.02mm are available as an option in order to be able to accurately determine the breech distance.
RIM GAUGES FOR PISTOL CARTRIDGE CHAMBER
These gauges check the minimum depth or maximum depth of rim milling of pistol cartridge bearings. Checking the rim depth is important for the breech spacing tolerance.
When the rim depth is correct, it must be possible to close the breech of the gun minimally with the rim gauge inserted; when using the maximum rim gauge, it must no longer be possible to close the breech. The gauge is manufactured in minimum and maximum versions. They are always used in pairs.
CASE MOUTH GAUGES FOR PISTOL CARTRIDGE BEARING
This gauge checks the minimum depth L3 of the cartridge chamber. If the chamber depth is correct, it must be possible to close the gun’s bolt when the minimum breech distance gauge is inserted. The length of the cartridge chamber gauge corresponds to the minimum dimensions. If the cartridge has neither rim nor shoulder, the L3 gauge is the breech spacing gauge. The gauges are manufactured in minimum and maximum versions. They are always used in pairs.
This gauge checks the maximum depth L3 of the cartridge chamber. If the chamber depth is correct, it must not be possible to close the gun’s bolt when the maximum bolt gap gauge is inserted.
The length of the cartridge bearing gauge corresponds to the maximum dimensions. If the cartridge has neither rim nor shoulder, the L3 gauge is the breech spacing gauge. The gauges are manufactured in minimum and maximum versions. They are always used in pairs.
TRANSITION GAUGES FOR PISTOL CARTRIDGE BEARING
This gauge checks the minimum depth of the transition cone If the depth is correct, it must be possible to close the gun bolt when the gauge is inserted. The dimensions of the gauge correspond to the minimum dimensions. The gauge is manufactured in minimum design as standard.
Two basic transition types are distinguished:
1. Cone only
2. Cone with cylindrical part
For transitions consisting of a cone with a cylindrical part, it must be ensured that the gauge does not jam in the cylindrical part. This would result in incorrect measurement. Due to the very small angles, the transition gauge must not be forced into the cartridge bearing. The gauge would jam. It must then be carefully pushed out with a cleaning rod to avoid breaking off the edge of the gauge or damaging the extractor.
POWDER CHAMBER GAUGES FOR GUN CARTRIDGE CHAMBERS
This gauge checks the diameters P1 and P2′ of the cartridge bearing. The diameters correspond to the minimum dimensions of the cartridge bearing. The gauge is only manufactured in minimum version. The powder chamber gauges for cartridge bearings of rimless cartridges have an extractor groove, the gauges for the cartridge bearings of rim cartridges are provided with a rim. Since this rim is thinner than that of the cartridge cases, it is very sensitive!
Because of the very small angles, the powder chamber gauge must not be forced into the cartridge chamber. The gauge would jam. It must then be carefully pushed out with a cleaning rod to avoid breaking off the edge of the gauge or damaging the extractor.
