EIL Model 77 Calibraton Unit - UK Vintage Radio Repair and Restoration Discussion Forum

SunSPARC · 13th Aug 2023, 8:21 pm

Electronic Instruments Limited, Model 77 pH/mV Calibration Unit - Circa late 50s - early 60s.

Would anybody like to save this from the bin?

All complete and seems to work as it should. Contains a Weston Standard Cell that is still functioning, but with slightly reduced output, so an offset needs to be allowed for to achieve correct standardisation against the supply battery.

The Science Museum have one, but not as complete as this example.

Offered FREE to collect, or UK postage at cost will be £5.99.

Thanks

JonSnell · 13th Aug 2023, 8:24 pm

Yes please, it will go next to my other circa 1950s test gear.
PM sent

SunSPARC · 13th Aug 2023, 8:58 pm

Now spoken for.

Thanks.

13th Aug 2023, 8:21 pm	#1
SunSPARC Pentode Join Date: Aug 2021 Location: Enfield, London, UK. Posts: 119	EIL Model 77 Calibraton Unit Electronic Instruments Limited, Model 77 pH/mV Calibration Unit - Circa late 50s - early 60s. Would anybody like to save this from the bin? All complete and seems to work as it should. Contains a Weston Standard Cell that is still functioning, but with slightly reduced output, so an offset needs to be allowed for to achieve correct standardisation against the supply battery. The Science Museum have one, but not as complete as this example. Offered FREE to collect, or UK postage at cost will be £5.99. Thanks Attached Thumbnails

13th Aug 2023, 8:24 pm	#2
JonSnell Hexode Join Date: Oct 2019 Location: Weymouth, Dorset, UK. Posts: 478	Re: EIL Model 77 Calibraton Unit Yes please, it will go next to my other circa 1950s test gear. PM sent __________________ Valve equipment repairs since 1968 https://jonsnell.co.uk

13th Aug 2023, 8:58 pm	#3
SunSPARC Pentode Join Date: Aug 2021 Location: Enfield, London, UK. Posts: 119	Re: EIL Model 77 Calibraton Unit Now spoken for. Thanks.