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Air Speed Indicators I.D.

Can anyone help with the 2 ASI’s as shown in the photo. I’m trying to work out what type of aircraft they would have been used.
The one of the left goes to 420 knots which is something I haven’t seen before. Marked as IXF 6A/1286
The one on the right is similar to a Harvard ?? gauge but seems to be more detailed. For example it has a ‘4’ at the bottom which again is something i haven’t seen before. Its an early gauge dated 1938 Ref MK IXC 11499/38 Made by Ferranti Ltd. There is a hand written note on the back with a stores ref 6A 1282 although there is no actual 6A number on the instrument itself

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By: Dev One - 25th February 2018 at 18:31

The right hand one looks like the one fitted to my fathers Proctor I

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By: flyingblind - 25th February 2018 at 15:01

If 6A/589 420 Knots is Mosquito, Beaufighter, Lancaster and Spitfire V- VIII then I assume 6A/1286 is the same as its stated to be Mosquito and is a 420 knot gauge.
I see some members are referring to their ‘lists’ I have a tatty of copy of AP1086 Book 7 which confirms the stores ref of some gauges and their speed ranges but it doesn’t list aircraft types. Is there another publication /website that does ? or are members referring to their own list
Is there a specific that I should be looking out for??

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By: Bruce - 25th February 2018 at 12:24

6A/1286 is Mosquito, Sea Fury and so on.

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By: Versuch - 25th February 2018 at 11:05

On my RAAF list 6A/282 MPH, is Anson, 6A/589 Knots, Beaufighter,Spitfire V-VIII,Mosquito and Lancaster ! Both no doubt on many other aircraft, as for the differing dials, its not uncommon.

Cheers Mike

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By: flyingblind - 25th February 2018 at 09:11

More gauges

And another 2
Obviously one on the left goes to 420 knots. 6a/589 MKIF Dated 1944. Sea Hurricane ?
The one on the right is MKIXC 4186/40 Again similar to Harvard but different in due to its orientation ?

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