2nd WW Altimeter - Mk XIIIB by Short & Mason

A 2nd WW  Altimeter - the Mk XIII was usually seen in pre war aircraft and early war training aircraft.   Made by Short & Mason the number on the dial is No. 952/39.   There is also a hand painted number in white paint which reads "MR.6.39".   So the writing on the dial reads -  "Height" and below that - "Mark XIIIB No.952/39".   Above the word "Feet" are the words "Short & Mason Thousands Of".   The Mk XIIIB was set zero before take off and indicates height above home aerodrome in flight.   For landing at any other aerodrome height difference between both aerodromes needed to be known.   Hence HEIGHT not ALT on dial.   It fits into a homemade wooden box.  

Postage with tracking number  R 50.00    Payment Bobpay EFT.