​This is an interesting screenshot from a video of the Pulqui II in 1951. You can see the cockpit with a Ferranti type gun sight and the face curtain handle of the headrest ejection seat of the Martin-Baker's system type Mk.1. This technology was only a couple of years in development and production in the UK.  It probably came with the purchase of a hundred Gloster Meteors Mk.4. The Pulqui had certain equipment from these planes, such as oxygen tanks.  Inside the plane, Professor Kurt Tank was about to put on the early hard shell helmet in preparation for flying the plane.  This was during the visit of Prince Bernhard of Holland who was interested in the plane.
In the bottom photo is Prince Bernhard in the pilot seat.  Kurt Tank is beside him with the sunglasses.
 Martin-Baker Ejection Seat Pre-Mk.1 and Pre-Production Mk.1 from an old Martin-Baker Catalog.

AN/ARN-6 Radio Compass. It was airborne navigation equipment from WWII in the 50s, used in the first jets such Gloster, Meteors, F-86 Sabre, and many others. Below are photos of the primary components of the set.

R-101A/ARN-6 Radio Compass. Receiver Transmitter.
AS-313B/ARN-6 Antenna Loop
CU-65/ARN-6 Antenna.
Control Box C-149/ARN-6.

Diluter Demand Oxygen Regulator

Korean War F-86 Sabre. Bendix Aviation Corporation. Eclipse-Pioneer Division Teterboro N.J.

​AN/APX-6

WWII/50s RT-82/APX-6 Transpondor
RCAF APX-6A Transpondor
IFF control APX-6 F-86 Sabre, F9 Cougar.

AN/APX-25 - SIF control, F-86 Sabre, F9 Cougar.

1950s. ARN-21 VHF NAV control.

RT-178/ARC-27 UHF Radio Transceiver. It was the most-used radio from the end of WWII until the 70s.  It was used in the F-86 Sable, A4 Skyhawk, among others.

Control Box C-628A/ARC-27. Unlike many other vintage control boxes, this did not come from a junk yard.  It was taken from a Lockheed T-33 USAF jet when a newer unit was installed.  
AM-608 control amplifier for UHF ARC-27 Radio.

ARC-5 Radio Set.

Receiver and transmitter from the US Navy in WWII.  Similar sets were used in the other military branches, with the same outward appearance but different internal components.  

HS-33 Headset USAAF:

H-79/AIC Headset (Roanwell Corp)

BC 221-M Frequency Meter Unit:

This equipment allowed for simple, accurate, portable frequency callibration in labs and in the field.  It was used for everything from aircraft radio tranmitters to radio receivers in the range of 125 to 20,000 kcs.  It uses Hytron radio tubes which were made by Hytron Radio & Electronics of Salem, Mass (manufacturers of radio tubes since 1921).  The headset is from the WWII era and has "TRIMM COMMERCIAL INC" over "Libertyville, IL, USA".  It is quite possible that the Soviets copied this model in their USSR CH4-1.  The CH4-1 looks very similar to the US SCR-211 but operationally it is more like the BC-221.

C-38/ARC-5 Radio Control (Grumman F6F Hellcat). WWII NOS:

WWII Ferranti Type. US Navy Mk.18 Gun Sight. This Giro Type Sight was copied by the US navy for planes during the Korean War.

Here you can see the Ferranti Sight.  The photo is from a 1951 Argentine movie.  The plane is a Gloster Meteor.

F-86 Sabre and F-104 Throttle and Control Stick

Left: USN Jaeger LeCoultre clock with red knob used in many aircraft in WWII. Right: Waltham clock (USN Corsair Fighter among others)

Korean War Instrument Panel Control Indicators (F-84 Thunderjet - F-86 Sabre, F9F Panther - B-47 Stratojet - F100 Super Sabre - F-104 Starfighter and others)

​ID-250 / ARN. Republic F-84F Thunderstreak and RF-84F Thunderflash , North American F-86F , F-86H Sabre and F-86D/K/L Sabre Dog , F-100C /D/F Super Sabre as well as in T-33 .
Indicator. ID-91B/ARN-6.
Lewis Engine Co Exhaust Temp Thermocouple indicator and Bendix Eclipse Pioneer Attitude Gyro Horizon Indicator
Turn and Slip Indicator RC 4 Minute DC Electric and Kollsman Altitude Indicator
Altimeter Pressure and The Liquidometer Corp Fuel Quantity Indicator
Fuel Flow Meter Pioneer and Volt Meter Indicator
Beechcraft C-45 Type VSI Rate of Climb Vertical Speed Gauge and 100 Knots Sperry Type L7A/C Pitot Static AirSpeed Indicator
Electrical Tachometer Indicator 8DJ82CAE AMETEK and F-100 Super Sabre Climb Dive Indicator
USAF F-86 Sabre Fuel Gauge Indicator and Kollsman Machmeter
F-104 Starfighter Pressure Gauge Hydraulic Hatch and Free Air Temp by Lewis Eng. Co