Code: 10854
RAF navigator's course & speed calculator in wooden carrying case.
Stores Ref. No. 6B/125. Made by H.T.A. Ltd. Size, 25x13x3cm.
Used during the early part of WW2, and later superceded by the ICAN.
Metal instrument with a top perspex sliding scale, used for calculating couse & speed when taking in to account for wind speed and drift. In an excellent working condition with additional pencil stored in the built-in holder.
Comes in wooden transit case. Green baize lined with twin brass clasp lid closure.
In a very good condition.
