What air craft is this from?

Judge · Feb 28, 2022

Hello

Thanks for having me I am investigating which aircraft this airspeed indicator has come from?

Bristol Beaufort is the one that seems to come up the most wondered if anyone can confirm this or otherwise.

Thanks in advance for any help.

Allan Hunter · Feb 28, 2022

Judge said:
Hello

Thanks for having me I am investigating which aircraft this airspeed indicator has come from?

Bristol Beaufort is the one that seems to come up the most wondered if anyone can confirm this or otherwise.

Thanks in advance for any help.

I'm no expert so I'll confine myself to saying that the Bristol Beauforts I have seen in pictures have this instrument. The range of speed is about right, too. Also Coastal Command of the RAF would have had knots specified, as this instrument has, because they flew over the sea and had their instruments calibrated in knots. So, yes, I think it's from, or for, a Beaufort. As I said, I'm no expert.

MiTasol · Feb 28, 2022

There will be a number like 6A/585 on the unit and that is the Air Ministry number. Find that and I can tell you if it is Beaufort.

This one is 6A/585 and certainly looks very similar.

Wurger · Feb 28, 2022

I would say the Ref no. is just behind the speedometer hand. IMHO 6A/1294 MK IXE from1944

A similar indicator can be found ... SpitfireSpares.com - warbird Instruments

MiTasol · Feb 28, 2022

That chart I provided above is from the April 1944 version of AP 1275 so the 6A/1294 designation was created after that date. That makes it highly unlikely it is from a Beaufort as the Beaufort I & II used 6A/585. My graphic above of that unit comes from the Beaufort AM catalogue.

Wurger · Feb 28, 2022

I agree ,the Beaufighter/Beaufort 6A/585 indicator looked very similar .... the one had the number changed to the 1294 ...

the source: SpitfireSpares.com - warbird Instruments

MiTasol · Feb 28, 2022

Interesting
That is a 585 that has been converted to a 1294. It would be interesting to know what the changes were and, especially, the reason for them.

Wurger · Feb 28, 2022

Yep..

Also it looks like the 6A/585 could look like the one ...

the source: Blind Flying Panels and Instruments

Judge · Mar 1, 2022

Thank you for all your answers the reference number is

MiTasol said:
There will be a number like 6A/585 on the unit and that is the Air Ministry number. Find that and I can tell you if it is Beaufort.
View attachment 659712
This one is 6A/585 and certainly looks very similar.
View attachment 659713

Hello and thanks for your help the number is:-

6A/129 4 MKIXE*No.55676/44

Judge · Mar 3, 2022

MiTasol said:
There will be a number like 6A/585 on the unit and that is the Air Ministry number. Find that and I can tell you if it is Beaufort.
View attachment 659712
This one is 6A/585 and certainly looks very similar.
View attachment 659713

Hello, I have a reference number MK IXE ref 6A/1294.

MiTasol · Mar 3, 2022

See post 7

Wurger · Mar 3, 2022

And post 4

VERSUCH · Mar 3, 2022

The differences could be simply a change from the Luminous face to Fluorescent face. This is not uncommon.

For instance 8 day clock 6A/1104 Luminous and 6A/1105 Non Luminous identical clocks except for the face.

Cheers Mike

MiTasol · Mar 3, 2022

Hi Mike

If you go to the chart in post 3 you will find that the 585 is luminous and the 586 is the non luminous version of the same IXE* gauge.

To change the number, but still call it a IXE*, means there is some other significant change. It must be a significant one to cause such a change and it probably would have been to fix a problem that required all 585s to be replaced with 1294s in certain aircraft, or even all aircraft, in service at that time. The usual practice with a modification was to paint a specific colour dot on the back or side of the instrument to show it had been modified. Changing the part number would indicate a more critical change.

Hopefully someone will have a later copy of AP 1275 which contains the necessary information.

Judge · Mar 4, 2022

MiTasol said:
Hi Mike

If you go to the chart in post 3 you will find that the 585 is luminous and the 586 is the non luminous version of the same IXE* gauge.

To change the number, but still call it a IXE*, means there is some other significant change. It must be a significant one to cause such a change and it probably would have been to fix a problem that required all 585s to be replaced with 1294s in certain aircraft, or even all aircraft, in service at that time. The usual practice with a modification was to paint a specific colour dot on the back or side of the instrument to show it had been modified. Changing the part number would indicate a more critical change.

Hopefully someone will have a later copy of AP 1275 which contains the necessary information.

Hello

Can you get a pdf version of the AP manual?

MiTasol · Mar 4, 2022

There are several on the internet and I have posted one section to British Instrument documents

I will scan and add Indicators when I get some spare time.

Judge · Mar 5, 2022

MiTasol said:
There are several on the internet and I have posted one section to British Instrument documents

I will scan and add Indicators when I get some spare time.

Thanks and let me know when you do.

What air craft is this from?

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