Tenders are invited for Supply of Item Bore Gauge
With Dti 50-150 Mm
According to my BrowneIls bore gauge
, the latter four have constrictions of .003, .015, .023 and .035 inch.
Once a barrel is cleaned and allowed to cool to room temperature, a single operator can insert the electronic bore gauge
in one end and take readings at every inch mark along its length to generate data on its condition.
The critical main bearing bore, held to +/-0.001", was measured with a dial bore gauge
, which the shop found a time consuming and unprofitable process.
At EMO 2003, Blum-Novotest introduced the Laser Control NT for tool setting and detecting missing or broken tooling, the TC touch probe family for workpiece locating and measurement, and the on-machine wireless Bore Gauge
BG40 for high-volume measurement of production parts with he same diameter.
And finally another useful tool that all serious shot gunners should own is a micrometer bore gauge
to measure bore diameter, choke constriction, and forcing cone length.
Using a bore gauge
from Brownells, I came up with .406 inch for both barrels--close enough to the .410-inch standard.
Tenders are invited for supply of cylinder bore gauge
Checking out the 12-gauge short-range choke with a Brownell's bore gauge
, I found that it tapered to a diameter of .720 inch (improved cylinder), whereas the tighter choke was closer to modified at .713 inch--not enough to make a noticeable difference in the blind.
Although the modification of forcing cones and chokes is best left up to a gunsmith who specializes in the art, there is a great deal to be learned by the application of a bore gauge
to the shotguns that pass through your hands over the years.
Tenders are invited for Metric bore gauge
with all standard equipments
Tenders are invited for Bore gauge
20 items firms should quote their tender through ofb e proc site