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    Heading/Speed Acceleration Error Card
    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:
      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


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