A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: David Pike
Date: 2017 Dec 27, 10:03 -0800
The Heading/Speed Acceleration Error Card, Stores Ref 6B/3677 was designed by an RAF Navigator called Ted Mears who subsequently became O/C No 44 Sqn. It was used with a Computer Dead Reckoning Mk 4A or Mk 4B. Within the RAF it was known as ‘The Mears Slide’.
I’m ashamed to say I converted my first one using lots of Snowpake to make a height of tide slide for my Mk 4B, but I managed to scrounge another when I got interested in celestial again. This is my only one.
I can think of three ways of getting one:
a. Try asking London Name Plate Mfg Co Ltd of Brighton, England if they have one left in their cupboard.
b. I colour photocopy mine and send a copy to those requesting a one.
c. My son has promised to scan a soft copy at work after the holidays; I could email the soft copy to those requiring one. If it works, I favour this method.
Once received, the copy could be stuck on thin plastic or aluminium, or you could draw your own; all the lines are straight ones. DaveP