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Revolution Counters

Page 13 Instruments

RAF Wartime Rev Counters measure engine revs and are generally 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. If you are not sure what Rev Counter you require then please contact us and I will do my best to advise you on the most suitable purchase. Bombers and Fighters generally used different styles of Rev Counters.

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

Click on the picture's to enlarge

WWI RFC SE5A MK IV Rev Counter (Pg 13 Instruments Rev Counter 1A)

This is a superb and original rev counter from the Great War. It is totally original and still works. It is marked with the War department mark .

 Made by Smith and Sons nos 4058F

Also on the face its says RAE repair non luminous.

Having done some research this Rev counter is an exact match for the one used in the SE5A seen under in situ under an original SE5A

Click on the picture's to enlarge

The SE5A unlike many of its peers like the Sopwith camel was a stable aircraft which was a rarity in those days. It had a good powerful engine and a strong airframe reported to be able to dive at 200 MPH a huge speed in WWI.

RFC Pilots had no parachutes the story goes that the generals thought it would encourage the pilots to bail rather than fight but in reality there was no room for a parachute in these aircraft.

 Life expectancy was extremely short for an RFC Pilot and they suffered greatly from combat stress and did most of the combatants in this brutal modern war. This instrument has clearly been used and was probably brought back as a souvenir and its amazing to think what this piece of history may have witnessed.

Out of stock more required please contact me

Click on picture to enlarge

Hawker Fury RPM Gauge (Pg 13 Instruments Rev Counter 1)

Superb boxed early RPM gauge dated 1938. Used in the Hawker Fury.

275

Avro Tutor Rev Counter Hawker Fury RPM Gauge (Pg 13 Instruments Rev Counter 2)

This RPM gauge was used in the Avro Tutor. Probably used in other 1930s aircraft with the same engine.

The Tutor was designed as a replacement for the Avro 504 trainer. The prototype was fitted with the lower powered Armstrong-Siddeley Mongoose engine, but production aircraft were fitted with the Lynx engines. The Tutor entered service with the RAF in 1933 and from 1933-36, Tutors from the Central Flying School were famed for their impressive formation aerobatic displays. Tutors were also used throughout the RAF as elementary training aircraft

275

Click on the pictures to enlarge

225

MK VII Flexible RPM drive 2(Pg 13 Instruments Rev Counter 3A)

This is a Flexible Mk. VI Smith and Sons  RPM Drive Cable

 

27 1/2 inches or 70cm long.

Should  be serviceable with the required checks

6A/1433

RPM Mk IX G 4 LHD  (Pg 13 Instruments Rev Counter 4)

Rev counter but with the drive coming out of the LHS rather than vertically.

Dated 1943

235

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RPM RHD  (Pg 13 Instruments Rev Counter 4A)

Rev counter but with the drive coming out of the RHS rather than vertically.

This was is unusual that it has no reference number or date.

Click on the pictures to enlarge

235

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RPM Mk IX B  (Pg 13 Instruments Rev Counter 5)

A really nice 2600 RPM as used the Tiger |Moth in its original box.

Dated 1944

Click on the pictures to enlarge

 

Out of stock

 

Click on the pictures to enlarge

RPM Mk IX B Tiger Moth (Pg 13 Instruments Rev Counter 5A)

Rev counter dated 1940. These were fitted in the Tiger Moth  which was used for initial pilot training by the RAF. The de Havilland Gipsy Major engine for which this Rev counter is suitable is a four cylinder, air-cooled, inline engine used in a variety of light aircraft produced in the 1930s.

Seen in Situ above fitted in a Tiger Moth Cockpit

Probably the best known training aeroplane ever, the Tiger Moth open-cockpit tandem two-seat biplane was first flown in 1931 from Stag Lane. It is a single bay biplane, with normal forward stagger to aid pilot vision, reduce the aerodynamic interference between the two wings, and ease cockpit access. The wings were given slight sweepback to maintain the centre of gravity and lift positions while having the centre-section support struts forward of the front cockpit. This made exit from the front cockpit easier when wearing a parachute, to comply with Royal Air Force requirements.

Out of stock

Click on the pictures to enlarge

Rev Counter 6A 778 Mk IV B (Pg 13 Instruments Rev Counter 6)

This is in good used condition the case has some surface corrosion and the glass has a crack and needs replacing.

MK IV B

5000 RPM

Dated 1943

6A/778

95

 

Click on the pictures to enlarge

Jaeger Rev counter Type AVR 1959 (Pg 13 Instruments Rev Counter 7)

Aircraft Jaeger rev counter.

Type AVR 1959

3000 RPM

Reference 44570

Inspection Stamp JA over 05

 

Out of stock

 

Click on the pictures to enlarge

MK VII Rev Counter 6A/1559 (Pg 13 Instruments Rev Counter 8)

MK VII

20000 RPM

6A/1559

Service dates of 1950 and 1954

Used in early jets including the Meteor.

 

75

 

Click on the pictures to enlarge

MK VII Rev Counter 6A/1559 (Pg 13 Instruments Rev Counter 9)

MK VII

20000 RPM

6A/1559

Used in early jets including the Meteor.

 

75

 

Click on the pictures to enlarge

1930's Vintage Car Smiths Rev Counter R-R 5588 (Pg 13 Instruments Rev Counter 10)

A nice early 1930's Smiths rev counter

Unfortunately it does appear to work.

Out of stock

Click on the pictures to enlarge

 

 

MK IX G Spitfire Rev Counter 6A/1191 Tachometer (Pg 13 Instruments Rev Counter 11)

Classic rev counter as used in the Spitfire and other Merlin powered fighters.

MK IX G

Dated 1941

Click on the pictures to enlarge

300

 

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Mk IV B  Rev Counter (Pg 13 Instruments Rev Counter 12)

This is a nice early Rev Counter as used in twin and four Engine Merlin powered aircraft.

Click on the pictures to enlarge

6A/778

0-5000 RPM

75

Click on the pictures to enlarge

MK VII Rev Counter 6A/1559 (Pg 13 Instruments Rev Counter 13)

MK VII

20000 RPM

6A/1559

Dated 1951

Used in early jets including the Meteor.

 

75

Click on the pictures to enlarge

MK VI Rev Counter 6A/1299 (Pg 13 Instruments Rev Counter 13A)

Mk IV Max 5000 RPM

6A/1299

Suitable for a Lancaster Panel

75

 Target Towing RPM Gauge Mk XIV  (Pg 13 Instruments Rev Counter 14)

I noticed on your site an R.P.M counter with the stores reference Air Ministry 9A/1331.  This was fitted to the Type B Target Towing Winch which was fitted to numerous aircraft including the Defiant TT.I & TT.III, Martinet, Battle and Henley to name just a few.  I have attached a photo showing the instrument in place.

Information gratefully received from Tim Bishop

Seen under a Fairey Battle in target towing livery.

This instrument is in good condition and comes complete with a working drive cable.

175

 

Contacting Rev counter  (Pg 13 Instruments Rev Counter 15)

This is a really unique item a contacting rev counter. I have never seen one of these before, it is definitely wartime as it has a Kings crown stamped on the back so manufactured before 1944. This may be for a test aircraft as a contacting unit usually activates an audible warning when a pre set limit is reached war, contacting altimeters are used on dive bombers to warn the pilot when its time to pull out of a dive so this may have a similar function by warning the pilot a pre set RPM limit has been reached.

 

175

Click on picture to enlarge

Barrage balloon Control Gauge  (Pg 13 Instruments Rev Counter 15A)

Very unusual  Wartime gauge used to measure the rate of climb and descent of a barrage balloon. This was attached to the winch vehicle.

Out of stock more required please contact me

Hampden Rev Counter  (Pg 13 Instruments Rev Counter 16)

The Hampden was the last of the twin-engine medium bombers to go into service during the expansion of Bomber Command in the late 1930s and, together with the Wellington and Whitley, it bore the brunt of the Royal Air Force's attacks against Germany in the early years of the Second World War. Better manoeuvrability and performance than its two contemporaries led to high expectations, but early war time operations proved the aircraft had serious deficiencies. Two particular problems were identified. The very narrow fuselage provided cramped accommodation for the crew causing fatigue on long missions. Unlike other British medium bombers the Hampden had no multi-gun power-operated turrets. Its fixed forward gun was next to useless and the three flexible gun mountings in the nose and fuselage had a limited traverse which produced a number of blind spots. Modifications were put in hand to provide more guns but the fuselage design remained a problem throughout its service life.
After a disastrous, but mercifully short, daylight campaign Hampden's were switched to night operations until 1942 when a number were converted to carry a torpedo. Eventually 144 aircraft were modified in this way and the type continued in service with Coastal Command as a torpedo bomber until December 1943.

Please note it has come to my attention that this gauge was also used in other early Bombers including the Wellington and Anson.

Hampden Rev Counter B (pg7 ins)

Mk11B Dated 1941

125

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Rev Counter 6A/1299  (Pg 13 Instruments Rev Counter 17)

Mk IV Max 5000 RPM

6A/1299

Suitable for a Lancaster Panel

75

 

Hampden Rev Counter   (Pg 13 Instruments Rev Counter 18)

Boxed in superb condition dated 1939

Out of stock more required please contact me

Rev Counter (Pg 13 Instruments Rev Counter 19)

Used in Heavy RAF Wartime bombers electrical revolution counter. One of the scales is missing but still and interesting piece. Triple pointer

Mk11B A/M 6A/394

55

Jaeger WW1 Rev Counter (Pg 13 Instruments Rev Counter 20)

This is a very nice Jaeger rev counter believed to be used in WW1 aircraft. It reads to 2200 RPM with a rev limit of 1850 this is consistent with the revolutions produced by early aero engines see pictures. In good original condition.

This is an SE5A Cockpit. Although the rev counter is a modern replacement (Flying Reproduction) you can see the rev limit is just under 2000 RPM

Another SE5A cockpit what a variation from the one above . Click on the picture to enlarge. The RPM counter again does not look original.

You can enlarge this click on picture.

New information leads me to believe This instrument was used in early Bentleys and may have doubled up as an aircraft rev counter however I cannot be sure that. I have been told by a Bentley collector that these change hands at up to 700 so still a good buy.

499

Click on the pictures to enlarge

Gloster Meteor RPM Gauge  (Pg 13 Instruments Rev Counter 21)

These were fitted to the Gloster Meteor and probably other early Jets.

Ref 6A 1559

Dated 1952

 Three available 2nd dated 1953

75 each

Click on the pictures to enlarge

Gloster Meteor RPM Gauge  named to aircraft WA 594 (Pg 13 Instruments Rev Counter 22)

As above but name to aircraft WA 594

Ref 6A 1559

 85

Kollsman RPM gauge  (Pg 13 Instruments Rev Counter 23)

Here we have a Kollsman 377 series aircraft RPM made by the Kollsman Instrument Company of New York, USA. Has a hairline crack in the glass.

55

  Lancaster Rev Counter  (Pg 13 Instruments Rev Counter 24)

Classic Lancaster rev counter, sets of four available.

A/M stamped these are generic instruments used in variety of Wartime Heavy and light Bombers including the Lancaster and Mosquitoe.

 

75

Click on the pictures to enlarge them

Out of stock more required please contact me

 

Tachometer Generator 6A/12767  (Pg 13 Instruments Rev Counter 25)

Boxed New old stock Tachometer Generator

6A/12767

Click on the pictures to enlarge them

     

Mk. VIIA Rev Counter (Pg 13 Instruments Rev Counter 26)

Here we have a Mk. VIIA Rev Counter

This has the Air Ministry Part Number 6A/1559

This has a small chip in the side of the glass

125

Click on the pictures to enlarge them.

Smiths industries Rev Counter A.T.R.C (Pg 13 Instruments Rev Counter 27)

I have spent quite a bit of time trying to find what this was used for. It looks like a classic car gauge but has an air ministry stores reference.

A.M  42 FF/69

It has a solid brass case. Its a type A.T.R.C 85 made by  Smiths industrial instruments who were a sub company of Smiths and Sons and was formed in the 1940s

The A T R C stands for auto temping racing competition and are high quality and very accurate instruments usually used on racing machines. I tried to look up the pattern number which appears to be quite early but could not find the specific numbers.

If anyone has any information about this instrument please contact me.

Click on the pictures to enlarge them.

275

 

Click on the pictures to enlarge them.

Mk IV B Rev Counter (Pg 13 Instruments Rev Counter 28)

Used in Merlin powered multi engine aircraft from the Lancaster to the Mosquito.

Dated 1944 ref A.M 6A/723

85

 

MK IV Rev Counter (Pg 13 Instruments Rev Counter 29)

 

Click on the pictures to enlarge them.

75

 

Click on the pictures to enlarge them.

 Fighter Rev Counter 6A/1191 (Pg 13 Instruments Rev Counter 30)

Used in the  Spitfire and practically all other RAF WWII  Merlin single engine fighters.

 In original used condition.

6A/1191

Dated 1944

Out of stock

 Rev Counter generator MK IV (Pg 13 Instruments Rev Counter 31)

This is a rev counter generator they converted the rotary movement from the engine to electrical to drive electrical rev counter's in aircraft where the distance from the instrument panel was to far to practically use a turning cable drive. Lancaster's use this type of generator along with other heavy bombers, transport aircraft and twin engine aircraft like the Mosquito. The fitting on this generator is the same as the standard rev counter drive and a short cable attached to the engine was connected to the generator unit from there electrical cables were connected to the rev counter on the instrument panel.

Click on the pictures to enlarge them.

275

Wellington Rev Counter Mk VA (Pg 13 Instruments Rev Counter 34)

0-4000 RPM

Hercules engine Wellingtons used this rev counter as did other similarly powered aircraft.

Click on the pictures to enlarge them.

75

 

Click on the pictures to enlarge them.

 

Gloster Meteor Rev Counter (Pg 13 Instruments Rev Counter 36)

These were fitted to the Gloster Meteor and probably other early Jets.

 

Ref 6A 1559

 

 

75 each

 

24 volt AC Rev counter Generator (Pg 13 Instruments Rev Counter 38)

Wartime Air ministry crown marked

AM Ref: 5U/101

N3EZ

No 886

RX 11701

Appears in serviceable condition and spins freely.

 175

 

Click on the pictures to enlarge them.

Rev Counter 5000 RPM (Pg 13 Instruments Rev Counter 39)

Here is a white faced rev counter with the same case as the Mk IV B as used in the Lancaster and Mosquito .

 With a rev limit of 5000 RPM for use with a Piston engine.

Click on the pictures to enlarge them.

 75

Click on the pictures to enlarge them.

Rev counter from Vickers Valletta WJ 477 (Pg 13 Instruments Rev Counter 40)

This rev counter has a small piece of tape where you can just make out the serial number WJ 477 this makes it from a Vickers Valleta. This aircraft first flew in 1952 and was destroyed at RAF Scamptons fire dump.

The Valetta C.1 entered service with the RAF in 1948, replacing the Dakota with RAF Transport Command and with transport squadrons in the Middle and Far East. The Valetta was used to carry out parachute drops in the 1956 Suez crisis as during the Malayan emergency and operations in Aden.

 75

 

 

Out of stock more wanted contact me.

Luftwaffe BF110 Tachometer (Pg 13 Instruments Rev Counter)

Here we have a Original  Rev Counter as Used in the BF110

It Measures from 500 to 3500 RPM

I am Unsure of the Reference Number as the Label has deteriorated

Click on the pictures to enlarge them.

MK IX G Spitfire Rev Counter 6A/1191 Tachometer (Pg 13 Instruments Rev Counter 41)

Classic rev counter as used in the Spitfire in its original box in excellent condition appears unused and should be serviceable with the required checks.

6A/2122

MK IX G

Dated 1944

Click on the pictures to enlarge them.

Out of stock

 

 

 (Pg 13 Instruments Rev Counter 42)

 

 

 75

 

 

 

Click on the pictures to enlarge them.

 

(Pg 13 Instruments Rev Counter 43)

 

 

 75

 

 

 

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Mk XG 6A/1191 Rev counter (Pg 13 Instruments Rev Counter 44)

Reads 0-5000 RPM

Dated 1944 it has a broken lug the missing piece is taped to the back and may be repairable with a tig welder please enlarge the pictures top see the condition.

 175

 

 

  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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