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Airspeed Indicators

RAF Wartime Airspeed indicators are generic instruments, the aircraft shown in our adds did use the ASI's shown but they may of coarse been used in a different type of aircraft with matching performance for that date. In the case of the Spitfire there was really only the Mosquito that had a similar performance so these indicators are quite type specific. If you are not sure what ASI you require then please contact us and I will do my best to advise you on the most suitable purchase.

Use the links under to navigate the instrument pages

Page 1 Instruments home.  Page 2 Airspeed indicators.    Page 3 Altimeters.    Page four Boost gauges.    Page five Clocks and compasses. Page Six Climb and descend.          Page 7 Directional indicators     Page 8 Fuel gauges    Page 9 Flap Indicators Page 10 Brake Gauges  Page 11 Oxygen gauges  Page 12 Pressure gauges   Page13 Revolution Counters   Page 14 temperature gauges

  Page 15 Turn and slip and artificial Horizon  Page 16 Undercarriage indicators  Page 17 Trim gauges  Page 18 Volt and Ammeter

Mk IXF

Very Early date of 1940

 

480 MPH ASI 1940  (pg 2 ins Ref ASI 38)

This is an extremely rare 480 MPH Air speed indicator as it's dated 1940.  It uses the deeper early case later versions were half as deep.

 480 MPH Air Speed Indicators were not used in Spitfires until the Mark V . In 1940 the fastest aircraft in service the Spitfire MK II could not exceed 400 MPH and used the earlier 400 MPH ASI. The 480 MPH ASI  was generally only used in the Spitfire and Mosquito. In 1940 the Mosquito was still in its prototype stage and the only Spitfire capable of exceeding 400 MPH in a dive was the MK III Spitfire.

Seen below the MK III Spitfire

 

The first Mk IIII N3297 was first flown on 16 March 1940. In addition to N3297 in early 1941 a Spitfire Mk V, W3237 was converted to a Mk III, although it didn't have the retractable tail wheel. W3237 replaced N3297 when the latter was delivered to Rolls-Royce; W3237went on to become a test aircraft and was still being used in September 1944.

Although the new Spitfire was developed to replace the earlier marks on the production lines, a decision to allocate the limited supplies of Merlin XX to the Hurricane II series meant that the Mark III lapsed. Priority then focused on the Mark V series. The Mk III with the Merlin XX was capable of a maximum speed of 400 mph (640 km/h) at 21,000 ft (6,400 m). There were a small number of other prototype aircraft in 1940 which could possibly have used this ASI Spitfire MK III. Mosquito. Hawker Tornado. Speed Spitfire. Westland Whirlwind.

Out of stock more wanted contact us

Click on the picture to enlarge it

The pictures are not particularly good but the glass is clear and the instrument is in good condition.

480 MPH Spitfire ASI  (pg 2 ins ASI Ref 4)

This is a classic 480 MPH Air speed indicator. Used extensively in the Mk V Spitfire onwards, replacing the 400 MPH ASI used in the earlier Mk's. This gauge is in good condition also used by the Mosquito but is exclusive to these two aircraft types.

 A/M 6A/1295 Dated 1941  with this date almost certainly fitted to a Mk V Spitfire the MK IX not entering service until 1943

The Mk V Spitfire

Out of stock more wanted contact us

Click on the picture to enlarge it

400 Knots ASI   (pg 2 ins ASI Ref 5)

Wartime airspeed indicator's dated 1944. In very good condition.

 The 400 knot ASi  was fitted to Mosquito NF38s in the early post war period. (ASIs calibrated in Knots, which were used by Coastal Command during the war, were adopted by other commands from the summer of 1945.)

 

Also suitable for the Royal Navy's Sea Hurricanes seen pictured left

A/M 6A/588

£125

400 Knots ASI 2  (pg 4 ins)

Click on the picture to enlarge it

400 Knots ASI   (pg 2 ins ASI Ref 6)

 

Dated 1944

      6A/598           

£125

 

Click on the picture to enlarge it

300 MPH ASI  (pg 2 ins ASI Ref 7)

Air speed indicator I have not seen one of these marked to 300 MPH before normally they read to 320.

 In good original condition it has one lug broken off but will still fit happily into a panel.

Dated 1942 this has certainly seen action as it serviced in 1945

 

£125

 

Click on the picture to enlarge it

240 MPH ASI 1942  (pg 2 ins ASI Ref 8)

240 MPH airspeed indicator dated 1942. This ASI would be used in a variety of the slower RAF aircraft operating in 1942. The North American Harvard would be a suitable candidate. One damaged lug see picture, would not affect its appearance in the panel as it is mounted from the rear.

£85

 

Click on the picture's to enlarge them.

ASI 320 MPH  (pg 2 ins ASI Ref 9)

Here is a 340 MPH Airspeed indicator in  good original condition.

Dated 1942

£125

 

Click on the picture to enlarge it

400 MPH Record Electrical company LTD ASI (pg 2 ins ASI Ref 10)

Here is an usual piece a 400 MPH ASI made by the Record Electrical Company, its unusual in that the scale reads from minus 100 MPH to 400 MPH. My best guess is that it is a piece of equipment used to test or calibrate Pitot tubes.

The record Electrical company

1911 Company formed by John Westmoreland Record.

1937 Electric engine speed indicators and electrical instrument manufacturers.

£125

Very nice original 400 Knots used in Naval Mosquito's and Hurricanes.

Click on the picture to enlarge it

Hawker Sea Hurricane and Mosquito ASI  (pg 2 ins ASI 13)

Dated 1944

 Mk 1XF  A/M 6A/589

£125

 

 

 

Click on the picture to enlarge it

550 MPH ASI  (pg 2 ins ASI 14)

Usually I would list this ASI for use in the Hawker Tempest and the Hawker Typhoon and as far as I was aware these were the only two aircraft types to use this particular ASI.

This one however has a DH tester stamp i.e. De- Havilland.  Supplied in its original box and dated 1943.

I am at a loss to explain this unless this was fitted to PRU Mosquito's cable of higher speeds, its just a theory and would be pleased to here from anyone with more info.

6A/1268

£195

 

Click on the picture to enlarge it

Typhoon/Tempest ASI  (pg 2 ins ASI 16)

Here is an ASI used in the Tempest and Typhoon, this one is most likely for the Tempest as its dated 1945. The picture is not representative of the gauge face which looks clean to the naked eye. The camera flash has made it look like its pitted this is not the case. The gauge is in very good condition and appears serviceable.

Am 6A/1270

£195

Mk I Spitfire/Hurricane 400 MPH ASI  (pg 2 ins ASI 17)

Here is a super hard to find ASI reading to 400MPH used in early Spitfires and Hurricanes. Still in its original box with attachments for connection to the pito tube.

 

Out of Stock

Click on the pictures to enlarge

 

Click on the pictures to enlarge

Click on the pictures to enlarge

£395

 

WW I Pitot tube for Nieuport 17 (pg 2 ins ASI 18) 

This is a very rare piece its a Pito tube from a French WWI aircraft. On the advertisement, shown below is:"Trompe anémométrique" The translation to English  n this case,"trompe" means tube or more precisely horn .and "anémométrique" wind speed measure"

It's writen in French, but in the French way of writing 100 years ago. Today,"un avion"(a plane) was  an" Aeroplane" 
 
The modern meaning ,of this advertisement is speedometer. The other name of the "trompe anémométrique" is "tube venturi".

Click on the pictures to enlarge


The piece is in excellent condition please enlarge the pictures. It was fitted to the Nieuport 17 but probably other French WWI aircraft as well.

Above the Nieuport 17

Spitfire ASI 450 knots (pg 2 ins ASI 19)

Very good condition airspeed indicator used in Post War Spitfires and Seafires. 

Seen under post war Spitfire F.22 / F.24

Out of Stock

 

 

Click on the picture to enlarge it

Tempest ASI 600 Knots  (pg 2 ins ASI 20)

Airspeed indicator used in Post war tempest , Sea Fury and early jets.

Hawker Sea Fury FB.11

Out of stock

Click on the picture to enlarge it

.

Typhoon A.S.I. 600 MPH  (pg 2 ins ASI 21)

These 600 MPH airspeed indicators are very rare and fitted first to Typhoons and later Tempests. I would say this was almost certainly fitted to a Typhoon. In nice original condition.

6A/1265 Dated 1943

The face is set at an angle as can be seen in the picture. I am not sure why but the face has not and cannot slip in the case so it was positioned this way for a reason

£155

 

Canadian Lancaster Mk X A.S.I  (pg 2 ins ASI 22)

 This Airspeed indicator is for a Canadian built Lancaster and shows the difference between British and Canadian built instruments. A British ASI would never be labelled for a specific aircraft. There were to be some differences between the British Lancasters and the Canadian built versions (known as Mk X's). The engines were to be of the same design, but manufactured by Packard in the United States and all instruments and radio equipment were to be of Canadian or American manufacture. However, it was deemed essential that all major sub-assemblies of the Canadian Lancasters be interchangeable with the British versions so that in the event of damage, spare parts would not have to be sent across the Atlantic

BOXED and clearly marked MK X Lancaster part

 

Out of stock more wanted contact me

Click on the picture to enlarge it

 

ASI 320 MPH 2  1940 (pg 2 ins ASI 23)

Very nice early Airspeed indicator dated 1940. Suitable for Wellington, Blenheim, Boulton Paul Defiant, Lancaster. Under The Grand Slam version of the Lancaster B.I featured faired over forward and upper turret positions, and an open bomb bay to accommodate the huge 10 ton (22,000lb) "earthquake bomb".

Out of stock more wanted contact me

Click on the picture to enlarge it

320 MPH ASI 1940 (pg 2 ins ASI 26)

Here we have a 320 MPH ASI dated 1940 in good condition

This is like most instruments is generic and would have been fitted to a range of aircraft with suitable performance. This type of ASI was also fitted to the Fairey Battle shown above.

The Fairey Battle was one of the most notorious aircraft of the WWII. During the German invasion of France in 1940 the Battle squadrons suffered very heavy losses during a series of desperate attacks on the German spearhead.

The Battle was designed to replace the Hawker Hart light bomber. In 1933 the Air Ministry wanted an aircraft that could carry two crew and a 1,000lb bomb load for 1,000 miles at 200mph.

 

£125

Click on the picture to enlarge it

 

ASI 320 MPH Mk IXD  (pg 2 ins ASI 27)

Airspeed indicator generic instrument suitable for Bolton Paul Defiant or Blenheim, used in other aircraft with similar performance.

Classic Battle of Britain 1940 dated.

 

£125

Click on the picture to enlarge it

.

 

400 Knots ASI  (pg 2 ins ASI 28)

Dated 1939 6A/589

400 Knot ASI in mint condition in its original box.

ASIs calibrated in Knots, which were used by Coastal Command during the war, were adopted by other commands from the summer of 1945.)

This type of gauge was used in the Sea Hurricane and other coastal command aircraft.

Out of stock more wanted contact me

 

Click on the picture's to enlarge them.

Swordfish 160 MPH ASI  (pg 2 ins ASI 29)

A very nice ASI (air speed indicator ) reading to 160 MPH  so used in one of the slower flying aircraft of the wartime RAF such as the Tiger Moth and Fairey Swordfish. It has its original brass seals covering the tubes on the back and the needle responds to pressure so is in working condition although it may need re calibration.

Dated 1943

A/M 6A/22

Click on the picture left to enlarge.

Out of stock more wanted contact me

Click on the picture to enlarge it

260 Knots ASI (pg 2 ins ASI 30)

A/M 6A/422

Dated 1953

£95

 

Click on the picture's to enlarge them.

600 MPH  ASI (pg 2 ins ASI 31)

A/M 6A/1568

Dated 1942

These 600 MPH airspeed indicators are fitted first to Typhoons and later Tempests. I would say this was almost certainly fitted to a Typhoon with a 1942 date. In nice original condition.

£175

 

Click on the picture's to enlarge them.

Dated 1942

6A/583 MK IXE

Mk I Spitfire/Hurricane 400 MPH ASI  (pg 2 ins ASI 32)

This is a classic and rare 400 MPH ASI used in early Spitfires pre Mk V and the Hurricane in nice original condition.

Mk I Hurricane

Out of stock more wanted contact me

Dated 1945

Click on the picture's to enlarge them.

These 600 MPH airspeed indicators are fitted first to Typhoons and later Tempests .With a 1945 date possibly Tempest  In nice original condition.

600 MPH  ASI (pg 2 ins ASI 33)

Hawker Tempest

£175

Click on the picture's to enlarge them.

 

Meteor 600 Knots ASI (pg 2 ins ASI 39)

Mk.9 ASI. Ref Number 6A/4722

As Used in the Gloster Meteor  and other Early RAF Jet Aircraft

There is a Lug Broken on the bottom right corner

Gloster Meteor

£65

Click on the picture to enlarge.

Messerschmitt BF 109 E Pito tube III (pg 2 ins ASI 51)

This is a Pito tube from a BF109 E . The 109 E was used extensively during then Battle of Britain. It is marked as 12 volts. It has sustained damage please see the picture.

Seen above the BF 109 E

£395

Spitfire Pito tube III (pg 2 ins ASI 34)

The pito tube is not really an instrument but as it operates the ASI this is the most appropriate place to list it. Shown left in situ on a MK IX Spit I was told by the owner this Pito was used exclusively on Spitfires.

Pito tube nos 3 this one's heating element has been tested and works.

AM  6A/730 Mk VIII C 12 volt

ref 46505

£425

 

Click on the picture's to enlarge them.

Pressure head Pito tube (pg 2 ins ASI 35A)

 

This is a British made piece but I have so far been unable to identify what aircraft it was used on I suspect something possibly pre war ?.

Please contact me if you know its application.

£195

Spitfire Pito tube IV (pg 2 ins ASI 35)

 

Super Pito tube in excellent serviceable condition complete with wiring. Two available one boxed.

£475

Spitfire Pito tube V (pg1 ins)

 Pito tube V (pg 2 ins ASI 36)

Pito tube made by Avimo in excellent condition

6A/1037661

Mk. 8.S 27 volt this voltage indicates a late war aircraft as later aircraft converted to 24 volts.

No 941/79

£425

Click on the picture's to enlarge them.

 

 

 Instructors Air Speed Indicator (pg 2 ins ASI 37)

A Very unusual air speed indicator used by Instructors

Air Ministry Marked

Ref: 9/529

Marked with H.T.A

One Mounting Lug is Missing

£55

Click on the picture's to enlarge them.

600 Knots ASI (pg 2 ins ASI 40)

Ref: 6A/3147

Mk. 9H*(P)

Dated 1954

As Used in the EE Canberra

£85

Click on the picture's to enlarge them.

340 Knots ASI (pg 2 ins ASI 41)

 Ref: 6A/4720

Mk 9K

Knots gauge in very good condition.

£95

 

Click on the picture's to enlarge them.

320 MPH ASI (pg2 ins ASI 42)

 Ref: 6A/415

Mk IXD

Battle of Britain Dated 1940

There is a Crack in the Bezel however the face is in very good Condition

As Used in the Paul Bolton Defiant, Fairey Battle and the Bristol Blenheim

£125

 

Click on the picture's to enlarge them.

600 Knots ASI (pg2 ins ASI 43)

 Ref: 6A/4399

Mk 9J* (P)

 Dated 1956

£85

 

Click on the picture's to enlarge them.

Spitfire/Hurricane 400 MPH ASI (pg2 ins ASI 44)

Air Ministry Marked 

 Ref: 6A/1239

Mk IXB

 Dated 1942

 ASI reading to 400MPH used in early Spitfires and Hurricanes

£400

Click on the picture's to enlarge them.

320 MPH ASI (pg2 ins ASI 45)

Air Ministry Marked 

 Ref: 6A/415

Mk IXD

 Dated 1942

As Used in the Paul Bolton Defiant, Fairey Battle and the Avro Lancaster

£125

Click on the picture's to enlarge them.

550 MPH ASI (pg2 ins ASI 46)

Air Ministry Marked 

Ref: 6A/1270t>

 Dated 1943

As Used in the Hawker Typhoon and Tempest

£195

Click on the picture's to enlarge them.

340 Knots ASI (pg2 ins ASI 47)

Air Ministry Marked 

Ref: 6A/1294

Mk IXE

 Dated 1942

This has a Broken Lug

£85

Click on the picture's to enlarge them.

Sea Prince WP320

Sea Prince 600 Knots ASI (pg2 ins ASI 48)

Ref: 6A/3147

Mk. 9H*(P)

Dated 1952

Removed from Sea Prince WP320

£95

Click on the picture's to enlarge them.

Sea Vampire XA130

Sea Vampire 600 Knots ASI (pg2 ins ASI 49)

Ref: 6A/3147

Mk. 9H*(P)

Dated 1953

Removed from DeHavilland Sea Vampire XA130

Out of stock

Click on the picture's to enlarge them.

 240 MPH ASI (pg 2 ins ASI 50)

Air Ministry Marked

Ref: 6A/282

Mk. IXC

Dated 1938

As Used in the Gloster Gauntle

£145

Click on the picture's to enlarge them.

340 Knots ASI (pg 2 ins ASI 51)

Mk IXE

Ref 6A/1294

Dated 1944

£95

 

 

Use the links under to navigate the instrument pages

Page 1 Instruments home.  Page 2 Airspeed indicators.    Page 3 Altimeters.    Page four Boost gauges.    Page five Clocks and compasses. Page Six Climb and descend.          Page 7 Directional indicators     Page 8 Fuel gauges   Page 9 Flap Indicators  Page 10 Brake Gauges  Page 11 Oxygen gauges

Page 12 Pressure gauges   Page13 Revolution Counters   Page 14 temperature gauges    Page 15 Turn and slip and artificial Horizon 

Page 16 Undercarriage indicators  Page 17 Trim gauges  Page 18 Volt and Ammeter

 


       

 


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