Simply using only soft copper scrapers, gauze, feeler gauges
and other tools can prevent this abrasion and many surface defects.
3 We started with one of Ken's rotors and measured the distances with our Craftsman feeler gauges
and they measured 0.011-inch.
"We would put the modules up there using the feeler gauges
based on what we had calculated.
"Unfortunately," Record said, "a feeler gauge
generates almost no data a machinist can use to correct a dimensional problem."
Advance both screws outward in equal amounts while taking feeler gauge
Other simple measuring tools in daily use in shops are feeler gauges
, thread gauges and scales.
Century International Arms recommends feeler gauges
A set of feeler gauges
available at most hardware and auto supply stores is required for both fixtures along with a #10 machinists clamp.
Those with countersunk chambers will require a go gauge to be checked properly, whereas those without countersunk chambers can be checked either with suitable gauges or by using feeler gauges
to check cylinder-to-standing-breech clearance.