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The new instruments home page contain miscellaneous, and unusual gauges which do not have a specific section page

Page 1 Instruments

Use the links under to navigate the New instrument pages

Page 1 Instruments Home       Page 2 Airspeed Indicators       Page 3 Altimeters       Page 4 Boost Gauges       Page 5 Clocks & Compasses  

Page 6 Climb & Descend      Page 7 Directional Indicators & Artificial Horizon       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 & Slip       Page 16 Undercarriage Indicators      Page 17 Trim Gauges      Page 18 Volt & Ammeter

Page 21 Instrument Panel, Plate & Label page.

 

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RAF Anti U Boat Leigh light Selsyn indicator and drive unit  (No 21 pg1 Inst)



Here is a very rare peace it is an indicator from the Leigh light system devised in 1942 to aid planes of coastal command when attacking U-boats at night.
Its a large instrument measuring just over 20cm across.


The operator could aim the light at the submarine before it was switched on, based on the radar display.


The light is moved by either electrical or hydraulic remote control and its position fed back using the self synchronising motors ("selsyn").In many cases the searchlight was mounted on the starboard wing, hence the strange asymmetry of the markings. It would unwise to point the light too far left, as it would dazzle the pilot and illuminate the plane fuselage.

Selsyn motors were widely used in military equipment for remote control and indication. A small 3 phase motor in the indicator is driven by a similar one in the transmitter.
First fitted to the Welligton Bomber which took advantage of the hole in the base of the Wellington left by the removal of the ventral turret used on early Wellingtons.
The first confirmed kill came a month later, on 5 July, when a Wellington piloted by Pilot/Officer Howell, one of many Americans who had joined the RAF, sank U-502 in the Bay of Biscay.


Not every Coastal Command aircraft could carry the Leigh Light. An attempt was made to fit it to the Halifax bomber in 1944, but the edge of the bomb bay blocked the light. No attempt was made to fit the Leigh Light to the Sunderland. It was used with the Liberator, which had much longer range than the Wellington.


The Leigh Light remained in use throughout the war – at the end of 1944 Coastal Command had 119 Leigh Light equipped Wellingtons.


Although the Leigh Light was not responsible for a large number of confirmed U-boat kills, it did force the U-boat force to abandon the surface of the Bay of Biscay at night and generally made life much harder for the U-boat crews. Prior to the appearance of the Leigh Light, the U-boats had been safe on the surface at night, using the time to refresh their air and recharge their batteries.

5T/237 Dated 1943. Click on the pictures to enlarge

 

Above far right the successful test of the Leigh light illuminating a British Submarine.

The indicator shown above left in situ and above a Leigh light. Far right U 502 the first U Boat sunk using the Leigh light system

The Leigh Light (L/L) was a British World War II era anti-submarine device used in the Battle of the Atlantic. It was a powerful (22 million candela) carbon arc searchlight of 24 inches (610 mm) diameter fitted to a number of the British Royal Air Force's Coastal Command patrol bombers to help them spot surfaced German U-boats at night.

Early night operations with the new Air-to-Surface Vessel radar (ASV) demonstrated that the radar's minimum range of about 1 kilometre (0.62 mi) meant that the target was still invisible when it disappeared off the radar display.

 Efforts to reduce this minimum were not successful, so Wing Commander Humphrey de Verd Leigh hit upon the idea of using a searchlight that would be switched on just when the target was about to disappear on radar.

The U-boat had insufficient time to dive and the bombardier had a clear view of the target. Introduced in June 1942, it was so successful that for a time German submarines were forced to switch to charging their batteries during the daytime, when they could at least see aircraft approaching.

Germany introduced the Metox radar warning receiver in an effort to counter the combination of ASV and Leigh Light. Metox provided the submarine crew with early warning that an aircraft using radar was approaching.

 Because the radar warning receiver could detect radar emissions at a greater range than the radar could detect vessels, this often gave the U-boat enough warning to dive. Having expected this, the Allies introduced the ASV Mk. III radar, regaining control of the battle.

Although the German Naxos countered these radars, by this time the U-boat force was already damaged beyond repair.

 £275

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 IFF Remote Contactor 4 Type 3 (No 20 pg1 Inst)

 Remote contactor IFF system. (Identification Friend or Foe) Spitfires had these fitted to the top RHS of the cockpit. The unit transmitted a signal for 15 secs out of every minute thus identifying this aircraft as friendly to the radar operators below. This enabled controllers to identify friend aircraft. This one is missing its glass.

This is the 12 volt version.

The 12 volt version was used in Fighters.

110A/339   196

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#

£295

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 IFF Remote Contactor 3 Type 4 (No 19 pg1 Inst)

Click on pictures to enlarge them

 Remote contactor IFF system. (Identification Friend or Foe) Spitfires had these fitted to the top RHS of the cockpit.

The unit transmitted a signal for 15 secs out of every minute thus identifying this aircraft as friendly to the radar operators below. 

This enabled controllers to identify friend aircraft.

This is the 24 volt version.

110A/337   626

£295

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 IFF Remote Contactor 4 Type 3 (No 18 pg1 Inst)

 Remote contactor IFF system. (Identification Friend or Foe) Spitfires had these fitted to the top RHS of the cockpit. The unit transmitted a signal for 15 secs out of every minute thus identifying this aircraft as friendly to the radar operators below. This enabled controllers to identify friend aircraft. This one is missing its glass.

This is the 12 volt version.

The 12 volt version was used in Fighters.

110A/339   196

£295

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De Icer gauge  (No 15 pg1 Inst)

De Icing gauge for a tail dragger

Capacity 23 gallons

1388Fg

24 Volt

Two available.

£65

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Ammo Counter G Turret (No 12 pg1 Inst)

Here we have a really nice ammo counter for a Twin MG G type turret.

£295

Bracket for Pressure gauges (No 11 pg1 Inst)

This is an original bracket for attaching the rectangular instruments such as oil pressure, fuel pressure and all other desyn type gauges

£10 each

Spare instrument glass kits (No 10 pg1 Inst)

These are original replacement glass lenses for the standard wartime instruments that you will find listed on these pages. Each box contains two glasses which are sealed and unopened. A typical gauge these are suitable for are the Rad Temp and Oil temp gauges used in Spitfires and practically every other RAF Warbird.

£10 per box two glasses

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Turret Position Indicator (No 7 pg1 Inst)

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Used in the turrets of Heavy Bombers such as Lancaster's, giving the gunner the position of the turret. 

£75

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 Remote contactor control box (No 6 Pg1 Inst)

 Remote contactor IFF system control box. Fitted to Spitfire's as well as other aircraft.

The unit transmitted a signal for 15 seconds out of every minute thus identifying this aircraft as friendly to the radar operators below. 

This enabled  fighter command controllers to vector Fighters on to the enemy with two distinct plots

. The control box has a clockwork mechanism and plugs into the remote contactor below.

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£185

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 IFF Remote Contactor 3 Type 4 (No 5 pg1 Inst)

Click on pictures to enlarge them

 Remote contactor IFF system. (Identification Friend or Foe) Spitfires had these fitted to the top RHS of the cockpit. The unit transmitted a signal for 15 secs out of every minute thus identifying this aircraft as friendly to the radar operators below. This enabled controllers to identify friend aircraft.

This is the 24 volt version.

10A/10995   S  8942

£295

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 IFF Remote Contactor 2 (No 4 pg1 Inst)

 Remote contactor IFF system. (Identification Friend or Foe) Spitfires had these fitted to the top RHS of the cockpit. The unit transmitted a signal for 15 secs out of every minute thus identifying this aircraft as friendly to the radar operators below. This enabled controllers to identify friend aircraft. This is the 24 volt version. This one is missing its plug but is in very nice clean condition.

£295

Click on pictures to enlarge them

 IFF Remote Contactor 1 (No 3 pg1 Inst)

 Remote contactor IFF system. (Identification Friend or Foe) Spitfires had these fitted to the top RHS of the cockpit. The unit transmitted a signal for 15 secs out of every minute thus identifying this aircraft as friendly to the radar operators below. This enabled controllers to identify friend aircraft. This is the 24 volt version. This one is missing its plug but is in very nice clean condition.

£295

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£185

Skinners Aircraft instruments stream line filter AN-5822-1 (No 1 pg1 Inst)

Here is a Skinners stream line filter made in Detroit USA Part Nos 2700 used to clean and filter the air to sensitive aircraft instruments.

AN-5822-1

 Contr.W535-Ac-32755

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Click on the pictures to enlarge them

Omega weems

Kings crown for A/M

Goldsmiths & Siverstmiths Co LTD

MK VIIA

Acier Staybright

Marking with Omega Symbol and Omega Text

Swiss made

FAB Suise

Serial number 4160/40

Dated 1940

A/M 6B/159

Movement Mk VIIA

Movement number 8947319

15 Jewels

Always wanted if you have one for sale contact me

Battle of Britain Omega Weems Watch 6B/159 (Pg 5 Compasses and Clocks 1A)

Worn by RAF Battle of Britain Pilots and Navigators

This is one of the rarest piece's on this site and a most desirable time piece of WWII .

 Omega supplied only 2000 Watches to the RAF during the entirety of the War.

This one off batch of 2000 being shipped from Omega to Goldsmiths & Silversmiths Jewelers to the Queen on the 5th of January 1940 in time for the Battle of Britain. Once checked they were then issued to the Air ministry and distributed to the Pilots and navigators of the RAF Operational Squadrons. Its was originally purchased some thirty plus years ago from a Scout Jumble sale in Biggin Hill.  Biggin Hill was one of the most famous  RAF Fighter Station's of WWII and Battle of Britain history and so it can be assumed it belonged to one of the fighter pilots who operated there. This piece is particularly rare having a red colored second hand. The Weems Omega was recently seen being worn in the film about Dunkirk, the Spitfire Pilot played by "Tom Hardy" used the watch to calculate His remaining fuel.

Click on the pictures to enlarge them

 Omegas were not  supplied to the Air Ministry again in this design, similar watches in the same style were supplied by Longines and Movado at approximately half the cost of the one with the Omega movement and although not plentiful are allot more common than the Omega.

Out of stock more required please contact me

This watch has not been restored and is original in every respect. The locking knob for the bezel has been removed at some stage probably because it was not needed when worn as a normal watch and gets in the way of the winding and time setting knob. The movement has been inspected by a watch maker and the movement is in good condition. Its a great shame that the locking knob has been removed but the bezel still rotates and the internal shaft appears to still be in place. I have taken advice from an expert in these watches who thinks the retail value of a complete piece is around 7 to 9 K GBP but with so few examples to gauge its value is hard to establish, one thing is for sure it can only appreciate in value over time. My price should allow for this watch to be restored to its original specification.

  Page 1 Instruments home.  Page 2 Airspeed indicators.    Page 3 Altimeters.    Page 4 Boost gauges.    Page 5 Clocks and compasses. Page 6 Climb and descend.          

Page 7 Directional indicators     Page 8 Fuel gauges   Page 9 Flap Indicators  Page 10 Brake Gauges Page11 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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