AVO Valve Characteristic Meter Mk.3 plus Data Manual and Working Instructions !

AVO Vintage Valve tester VGC, recently tested and in perfect working order. Hard back valve data manual 9th edition and working instructions 1st edition supplied. The tester weights about 15 kg. Belonged to my dad recently deceased. I am clearing out his stuff. I also have a selection of radio and TV valves from 50s to 70s to be sold separately. It is to be collected from south west London area.