A nice Mark IB artificial horizon instrument.

Ref No: 6A/1519

Ser No: 1805/52

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A really nice Mark 4 Automatic Pilot manufactured by The Electric Auto-Lite Co. Toledo, Ohio.

The U.S. Army Air Corps and the U.S. Navy experimented with autopilots on military aircraft before and during World War II.

Straight and level flight had become a necessity for new level bombing techniques that were being developed at the time.

The Sperry Gyroscope Company developed many autopilot systems for use on military aircraft. When the Boeing B-17 Flying Fortress was delivered in the late 1930s, it came equipped a commercial Sperry A-3 Autopilot.

The A-3 was a simple autopilot and only corrected angular deviations in the aircraft's straight and level course. It utilized pneumatic hydraulic servos, which had a tendency to react slowly to inputs, and this often led to overcompensation of the aircraft's corrected course.

This caused navigation and control issues when pilots were flying in poor weather or rough air.

This Bank Climbing Gyro was utilized on the Sperry Mark 4 Autopilot System. This autopilot system was used in versions of the WWII medium bomber B-25 Mitchell, patrol bomber PBY Catalina, fighter.
656503 F.S.S.C. 88-P-525

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Click on the pictures to enlarge them.

A really nice early Artificial horizon used in practically all types of RAF wartime aircraft in good original condition. The case has some paint loss but the face is good please enlarge the pictures to asses for condition. The MK I s are  extremely hard to find and i have only seen a handful in the last 20 years. It took forever to get the two horizontal lines to appear for the picture but if you are using it for display its easy to remove the glass which is held by a circular clip and they could be fixed in place, if its going to a flying aircraft it will need an overhaul .

6A/599

Dated 1941

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£395

Here is a Luftwaffe artificial horizon in good original condition. Used in a huge range of aircraft from around 1943 to the end of the war .

Fitted to the BF 110. JU 88. JU 52. HE III. DO 24. and like the British version probably used in nearly all Luftwaffe wartime aircraft .

Shown above the BF 110.

The Messerschmitt Bf110 originally was designed as three seat strategic fighter that had the task of clearing the way for the bomber formations that followed.

Soon to become known as the Zerstörer (the Destroyer) they made their presence felt during the early part of the Battle of Britain when the Luftwaffe began their attacks on the Channel convoys.

But even at the hands of hand picked elite aircrew, the Bf110 was to prove no match for the Hurricane or Spitfire and soon started to succumb heavy losses.

Soon, BF 110 formations were to be escorted themselves by Gruppes of BF 109s and even though the elite Erprobungsgruppe 210 had many major successes, the BGF 110 which started out as a fighter escort was relegated to the role of a fighter bomber and night fighter after the Battle of Britain.

This is a super rare artificial horizon MK II.

This is only the second one I have had for sale in the last 20 years. Used in the 1930's interwar years.

It is designed to be interchangeable on the instrument panel of the MK I and its frontal dimensions are the same although it is of a completely different design.

 The horizon plate and the front glass are spherical. It is possible that some of these instruments were in use at the start of the war in second line or obsolete aircraft.

The one I had previously was dated 1936 and also had the reference number 6A/711 this one does not so I'm guessing it is one of the early prototypes.

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WW2 German AFN2 Ln.27002 Radio Homing Indicator (Instruments pg 7 directional indicators and Art Horizon 2)

The AFN2 possesses 2 pointers, both horizontal and vertical.  When the aircraft is in-line on a direct course to base, the first needle (vertical) sits exactly upright, in-line with the square marking on the bottom. The second needle (horizontal) indicates the distance of the airplane to the transmitter (radio beacon). When flying over the transmitter the horizontal needle points in-line with the middle marking on the left.  When flying directly over the transmitter the fluorescent lamp (Fl.26682), integrated into the AFN2 would light up.  This was used in the Me109, Fw190, Me262, He219, and other late-war  Fighters and Bombers.

Seen in situ above in a ME 262

£295

A directional indicator made by Sperry used in the Blind Flying panel of USAAF aircraft. This one is unusual in that it has a large knob as seen in the picture left. In good original condition.

Out of stock

Directional Gyro used in Spitfire blind flying panels and practically all other Wartime RAF aircraft. It has Reference Number 6A/1298 and has a service date of 1951. Nice original condition.

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Directional Gyro used in Spitfire blind flying panels and practically all other Wartime RAF aircraft. It has Reference Number 6A/1299 . Nice original condition.

This is a nice early example dated 1943

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Venturi tube  (Instruments pg 7 directional indicators and Art Horizon 5)

Venturi tube as used on aircraft during WW2 which did not have an engine-driven vacuum pump to operate gyro direction indicators etc.

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Venturi tube 1940  (Instruments pg 7 directional indicators and Art Horizon 6)

Serial No 2875/40, which dates it as 1940 vintage.

Seen under in situ on a very early Hurricane MK I 

Battle of Britain dated Venturi tube as used on aircraft during WW2 which did not have an engine-driven vacuum pump to operate gyro direction indicators etc.  The front trumpet has been pushed out of round slightly, and is thin gauge, so will easily push out, otherwise it is in perfect condition with no corrosion or damage.

This is a directional indicator the knob on the front is unusually made of rubber which has deteriorated over the years however the mechanism still functions smoothly.

 The connection for this instrument is as the bottom as apposed to the rear as on the classic type Mk I Gyro.

6A/602

Dated 1940

£195

This is a directional Gyro MK I it has a crinkle paint finish but has some paint loss as can be seen in the pictures. The mechanism works smoothly and it comes with its original mounting screws in an attached packet.

6A/1297

Dated 1941 and service date of 1953.

£185

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6A/599

Dated 1942

A really nice early Artificial horizon used in practically all types of RAF wartime aircraft in good original condition. The MK Is are now extremely hard to find

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This is a fairly unique find as this instrument has the serial number of the Spitfire it was fitted to PL 952. This came with a collection of instruments all fitted to Spitfires from Denmark

PL 952 was a reconnaissance Spitfire built in 1944 and served first at RAF Benson and at some point was sold to the Royal Denmark Air force.

PL952 PRXI ALD M70 9MU 2-10-44 Benson 9-10-44 541Sq 19-10-44 6MU 13-9-45 SOC SOC 1-4-46

 It is dated 1944 and it has a service dates of 1944, 1946, 1947, 1954 and 1955 both of the latter being done in Denmark.

 The Danish armed forces received 38 surplus Supermarine Spitfire H. F. Mk. IXE[7] and 3 P.R.Mk. XI in 1947-48[8] plus four additional airframes for ground instruction, which were operated by units of the Hærens Flyvertropper and Marinens Flyvevæsen prior to their merger, and by the Royal Danish Air Force until 1956 when the last examples were retired and all but two scrapped.

  Mk.1B Artificial Horizon.

It has the Reference Number 6A/1498

£275

This instrument again came from Denmark it was originally made in 1943 and has a service date of 1946 and another which is obscured.

 It's most likely this came from a Spitfire sold to Denmark but there is no serial number visible..

Mk.1B Artificial Horizon.

It has the Reference Number 6A/1498

£95

This instrument again came from Denmark it's 1942 and has a service date of 1946 ,1953 and another which I cannot read.

This one is marked Oxford but the aircraft serial is not visible.

£95

Later version of the artificial horizon a MK I E model dated 1955 and used in early Jets. the glass has fogged in places  but could be removed and cleaned by a suitably qualified person.

£55

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Click on the pictures to enlarge them.

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