Details:
These are two 'Micro-Maag' bore gauge sets by 'Matrix' (Coventry Gauge and Tool Co Ltd).
These work by advancing a tapered 'needle' on a micrometer into a 'head' containing three 'fingers', which expand with the taper of the needle.
Given the slow taper of the needle, the resolution is extreme (0.00005" - ie 1/20 thou).
Both sets are in extremely good condition - most items are in their, original, protective packing - suggesting that, if the sets have been used at all, only a very limited range has been used.
Bot sets are in purpose-made, wooden, boxes - in very good condition.
These are very high quality tools from one of the best regarded manufacturers.
Set 1: Part number EA05, serial number A428, covers the range 1/4 to 1/2" (actually, 0.2465 to 0.5240). 11 'heads', 10 'needles', 2 extension pieces (to allow measurement further down the bore), ring gauge (3/8"), micrometer head and complete tool set (5 miniature spanners, a miniature screwdriver and even a magnifying glass - the parts are so small!).
Set 2:Part number EB05, serial number B506, covers the range 1/2 - 1" (actually 0.4930 to 1.0480). 11 'heads', 10 'needles', 4 extension pieces (to allow measurement further down the bore), ring gauge (3/4"), micrometer head and complete tool set (4 miniature spanners, a miniature screwdriver).
These sets would have cost thousands when new!
£150 per set, or £250 for both, including postage
Terms:
Price: Multiple
Postage: Free
Collection or Royal Mail
