WWII Air Ministry Issue Fitters Callipers

We have had numerous examples of these over the years but this set is larger than the norm measuring 6.5" long (16.5 cm).They are in really good issued condition and carry a Kings Crown and below A.M. (for Air Ministry) as well as he all important date of 1940 so would have certainly served through the Battle of Britain. The instrument is also embossed with the makers name Geo Plumpton & Co of Warrington. The same embossing is repeated on the reverse side not shown in our picture. Another modestly priced genuine wartime period item that would make an idea stocking filler for the aviation collector in you life.