Air Ministry Tyre Pressure Gauge by Kismet

Here we have another very fine RAF instrument in its original leather case marked 'Tyre Gauge Kismet Special 20-120 LBS'. The gauge itself is engraved with a crisp AM (Air Ministry) and Kings Crown property mark and 'Kesmet Special Giant Model ' although being quite a modest size we feel this description is a bit of a misnomer! We checked the the patent nos 532760 and this was applied for on 7th September 1939 and this was granted on 30 January 1941 so like other items listed on the site today this instrument almost certainly has a Battle of Britain period provenance. The maker is shown as William Turner & Brothers Ltd of Sheffield. The extending pressure scale covers tyre pressures from 10-120 P.S.I. Whilst this may be in working order for sale here as an RAF collectable only. Measures 5.5" (13.5 cm)