Hickok OS-8/U

The OS-8/U miniature oscilloscope is a general-purpose 2MHz ruggedised portable vacuum tube oscilloscope designed for use by the US armed forces, the navy and air force in particular, and was manufactured in the 1950s by the Hickok Electrical Instrument Co. in Cleveland, Ohio. The first generation of the OS-8/U only had eight tubes, whereas subsequent versions (OS-8A/U, OS-8B/U, OS-8C/U) had ten.

My specific unit seems to be a USAF variant from Kelly AFB, Texas.

Metropolitan-Vickers CT52

The Metrovick miniature oscilloscope model CT52 (100-250 Vac) and CT84 (28 Vdc) is a general-purpose 1MHz ruggedised portable vacuum tube oscilloscope designed for radar servicing by the UK armed forces, the navy in particular, and was manufactured in the 1950s by Metropolitan-Vickers Electrical Co. Ltd, in Trafford Park, Manchester.

Philips PM3217

The Philips PM 3217 is a general-purpose 50MHz dual-channel CRT oscilloscope with an 8 x 10 cm display and optional battery pack, manufactured in the 1980s by Philips in the Netherlands.

Kindly donated by Tracerco.

Solartron “Solarscope” CD1014.3

The Solartron CD1014.3 “Solarscope” is a vintage analogue vacuum tube oscilloscope with a round cathode ray tube (CRT) display.

From the collection of Chris Storey.

Telequipment Serviscope Minor

The Telequipment Serviscope Minor miniature oscilloscope is a general-purpose 30KHz low-cost vacuum tube oscilloscope designed for use in physics laboratories in British schools and was manufactured in the 1960s and 1970s by Telequipment Ltd. in Southgate, London.

Tektronix Type 453

The Tektronix 453 is a portable 50 MHz dual-trace oscilloscope introduced in 1965 & produced until the mid-1970’s. The market driver for the 453 was IBM, who wanted a portable ‘scope for field engineers for working on mainframe computers – this included a requirement that the scope fit under an airline seat, a reason for its size and front cover.

From the collection of Chris Storey.

Tektronix 222

The Tektronix 222 is a portable miniature battery-powered 10 MHz dual-channel CRT oscilloscope with digital storage (8-bit resolution, 512 samples) and independently isolated inputs.

Tektronix P6021 Current Probe

The Tektronix P6021 is a 125-turn AC current probe for oscilloscopes with bandwidth up to 52MHz. It can be used with the included passive termination box (011-0105-00), a Type 134 Current Probe Amplifier, or a 3A9 or 7A14 current probe amplifier scope plug-in.

Kindly donated by Tracerco.

Saunders Electronics Logic Probe

A logic probe is a low-cost hand-held test probe used for troubleshooting digital circuitry – this particular unit was made by Saunders Electronics, Hinckley (UK) in the 1970s and features a clear case, so the discrete components and PCB inside are visible.

From the collection of Chris Storey.

AVO Multiminor

The AVO Multiminor was a replacement for earlier ‘Minor’ AVOmeters, with a variety of ranges and functions selected by a single rotary switch.

From the collection of Chris Storey.

AVO Universal Avometer Model 8

AVOmeter is a British trademark for a line of multimeters and electrical measuring instruments; the brand is now owned by the Megger Group Limited. The best known multimeter of the range was the Model 8, which was produced in various versions from May 1951 until 2008.

From the collection of Chris Storey.

Marconi Instruments TF 1300

The TF 1300 Tube Voltmeter from Marconi Instruments (UK) is a vintage valve voltmeter (0.1-300Vdc +/- 2%, 0.05-100Vac +/- 3%).

TMK 500TU-B

The TMK 500TU-B from Tachikawa Radio is a compact, portable analogue multimeter.

Keithley 616

The Keithley 616 is a digital electrometer, a voltmeter with an extremely high input impedance, useful for measuring very low currents/charges or very high resistances.

Kindly donated by Tracerco.

Advance VM77C

The Advance VM77 from Advance Electronics Ltd. (UK) is a range of valve voltmeters, where the VM77C is a cost-reduced model with a PCB.

From the collection of Chris Storey.

Beckman 3020

The Beckman 3020 is vintage portable multimeter from Beckman Instruments (USA), with an early seven-segment LCD display.

From the collection of Chris Storey.

Racal-Dana 9903

The Racal-Dana 9903 universal counter-timer is a dual-channel 8-digit 100 MHz manual-range frequency counter.

Kindly donated by Tracerco.

Racal-Dana 9906

The Racal-Dana 9906 universal counter-timer is a dual-channel 8-digit 200 MHz manual-range frequency counter.

Bradley Electronics / Pulsetek 234

The Bradley Electronics 234 (also sold under Pulsetek) is a dual-channel 8-digit 100MHz counter timer.

Kindly donated by Tracerco.

BPL RS-600

The RS-600 is an RF signal generator from the 1950s, developed by British Physical Laboratories (BPL) Ltd. in Radlett, Hertfordshire, UK.

Linstead All-Wave

The Linstead All-Wave is an RF signal generator, which were commonly built using ex-government parts from as early as the 1940s.

From the collection of Chris Storey.

Metrix Wobulator Type 210

The Wobulator Type 210 from Metrix (Compagnie Générale de Métrologie, France) is a valve mains-powered table-top frequency generator primarily used for alignment of receiver or transmitter intermediate frequency (IF) strips in consumer radios & TVs.

AVO CT378B

The AVO CT378B is a valve mains-powered table-top frequency generator capable of outputting 2 – 225 MHz.

Lyons Instruments PG-2E

The Lyons Instruments (Claude Lyons) PG-2E is a mains-powered table-top transistor frequency generator capable of outputting 1 Hz – 10 MHz.

Marconi Instruments TF2016A / TF2171

The Marconi Instruments (MI) TF2016A Signal Generator and TF2171 Digital Synchroniser are a mains-powered table-top transistor AM/FM frequency generator capable of outputting 10kHz – 120 MHz in twelve bands.

CMJ Electronics Pattern Generator

The CMJ Electronics Pattern Generator is a test pattern generator for aiding repair and setup of CRT televisions with analogue RF tuners.

Kindly donated by Brad Dales in Teesside.

Weir Minireg Type 401

The Weir Minireg Type 401 is a benchtop 0-30V linear variable power supply.

From the collection of Chris Storey.

Philip Harris EHT Supply Unit

The Philip Harris EHT-SU is a high-voltage variable DC power supply designed for use in UK schools, for electrostatic experiments including ionisation, and for driving vacuum devices such as deflection tubes – it has a 0-6kV 3mA output as well as both 6Vac and 12Vac for driving the filaments on vacuum tubes.

Time Electronics 2003

The Time Electronics type 2003 DC millivolt calibrator is a precision voltage source for generating or measuring known, stable voltages in the millivolt range to verify the accuracy of other devices such as voltmeters.

Kindly donated by Tracerco.

Weir Type 413D

The Weir Type 413D is a benchtop 0-30V linear variable power supply.

From the collection of Chris Storey.

Hunts C.R.B

The Hunts C.R.B is a capacitor tester and resistance bridge from the 1940s, featuring a seeing-eye tube.

RCP Model 314

The Radio City Products “Model 314” is a tester for vacuum tubes, with ten valve holders, manual test voltage selection, current meter, and a neon lamp for indicating shorts.

From the collection of Chris Storey.

Stag PP28

The Stag PP28 is an EPROM programmer with support for 24-pin and 28-pin 16/32/64KB EPROMs, controllable via RS232C (DB25).

From the collection of Chris Storey.

Stag SE15

The Stag SE15 is a UV EPROM eraser with timer function.

From the collection of Chris Storey.

Research Electronics 905c

The Research Electronics (RE) Timer Scaler 905c is a high-voltage counter which uses dekatrons (rotary nixie tubes) for its display, and is designed to be used in conjunction with a Geiger–Müller tube or spark generator.

Kindly donated by Austin Pass in Manchester.

Philips PW4014

Philips Nuclear Equipment offered the transistorized pocket radiation monitor PW-4014 in 1958. It was advertised for use in “Nuclear Physics and Atomic Energy”. It has low measuring range 0-3 mR/h for radium-gammas, can connect separate Geiger-Muller (GM) probes and earphone, low power consumption, printed wiring, and tropic and waterproof. It employs the Philips GM type 18503.

From the collection of Chris Storey.

Ekco N645A

The Type N645A Field Ratemeter from Ekco Electronics Ltd. (UK) is a portable battery-powered Geiger counter, which uses a photomultiplier (PM) tube and scintillator to detect incident radiation.

From the collection of Chris Storey.

W.G.Pye & Co. 11801 Megohmmeter

The W.G.Pye & Co. 11801 megohmmeter is a specialist ohmmeter used for measuring the electrical resistance of insulators, with a test voltage of 500Vdc and a test range from 3-200MOhm.

Kindly donated by Tracerco.

Hunting Hivolt CheckIT IT7 MkII

The Hunting Hivolt (later Farnell Hivolt) CheckIT IT7 MkII is an insulation tester with a variable output up to 7kV and a leakage readout for non-destructive insulation testing.

Kindly donated by Tracerco.