A RARE SET OF GUNMAKER'S MASTER PATTERN CHAMBER-GAUGES, for 2 9/16in. chambers, comprizing the following: pattern chambers for .410, 20, 16 and 12-gauges, sectioned to show rim-recess details; plug gauges to show full length chamber taper; forward diameter 'GO' and 'NO GO' gauges; and underhead diameter 'GO' and 'NO GO' gauges, with rim-depth and diameter, sectioned to view rim-recess dimensions; some engraved 'C.O. & Co.' 28 gauges in total, possibly made by Charles Osborne & Co. | Christie's

拍品 84

A RARE SET OF GUNMAKER'S MASTER PATTERN CHAMBER-GAUGES, for 2 9/16in. chambers, comprizing the following: pattern chambers for .410, 20, 16 and 12-gauges, sectioned to show rim-recess details; plug gauges to show full length chamber taper; forward diameter 'GO' and 'NO GO' gauges; and underhead diameter 'GO' and 'NO GO' gauges, with rim-depth and diameter, sectioned to view rim-recess dimensions; some engraved 'C.O. & Co.' 28 gauges in total, possibly made by Charles Osborne & Co.

細節

A RARE SET OF GUNMAKER'S MASTER PATTERN CHAMBER-GAUGES, for 2 9/16in. chambers, comprizing the following: pattern chambers for .410, 20, 16 and 12-gauges, sectioned to show rim-recess details; plug gauges to show full length chamber taper; forward diameter 'GO' and 'NO GO' gauges; and underhead diameter 'GO' and 'NO GO' gauges, with rim-depth and diameter, sectioned to view rim-recess dimensions; some engraved 'C.O. & Co.' 28 gauges in total, possibly made by Charles Osborne & Co.
In their oak velvet-lined and fitted case
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