Skip to product information
1 of 14

VCM MK3 AVO Valve Tester / Valve Characteristic Meter In Working Condition

VCM MK3 AVO Valve Tester / Valve Characteristic Meter In Working Condition


Regular price £0.00 GBP
Regular price Sale price £0.00 GBP
Sale Sold out
Shipping calculated at checkout. Add to basket/cart for a shipping estimate based on postcode / zipcode

Out of stock

VCM MK3 AVO Valve Tester /  Valve Characteristic Meter In Working Condition

This is a very nice VCM MK3 AVO Valve Tester /  Valve Characteristic Meter In Working Condition, electrical tested but uncalibrated, made by AVO, London, UK.

If you regularly need to test valves/vacuum tubes to a pretty high standard, then this quality testing instrument is a must-have. They are quite rare to find in such good working condition.

The AVO VCM MK3 is one of the few valve/tube testers able to measure both anode current (Ia: in mA) and mutual conductance (Gm in mA/V). 

In very good used condition with a few blemishes, scratches and scuffs on the external surfaces commensurate with age and use. Some of the images show reflections from the table on the sides of the tester and are not defects. All controls operate smoothly.

We have removed the back panel and, as you can see from the photos, the insides are clean with no modifications.

Manuals for the VCM MKIII can be readily found to download on the internet. However, the valve tester will come with an electronic copy of operating instructions and valve settings manual on CD ROM.

See this one working in the YouTube video below. 


Please note that the Fat Boy KT66 is not included and was used for testing/video purposes only.  Click on this link to purchase.

The metal label at the rear of the instrument reads as follows:-

Made in England by The Automatic Coil Winder And Electrical Equipment Co. Ltd, Winder House,  London S.W.1

Serial no. 2355 Model VCM MK3

Approximate Maximum Unpacked Dimensions:-

Height: 35cm (13.8″)
Width: 41cm (16.1″)
Depth: 35cm (13.8″)

PAT Test
The 240 volt valve tester has been electrically tested using a flagship Seaward Europa PAT tester, and passed the UK Portable Appliance Inspection (PAT test).


We are offering this AVO VCM MKIII for £675, and this price excludes shipping. As this item weighs 15Kg, (unpacked), and is quite large is dimension, it will cost a significant amount of money to ship outside the UK.
Therefore we ask that International Customers contact us for a shipping quote if interested in purchasing.

View full details