SPQR Draper tappet adjuster

 This tappet adjuster first appeared under the German name SPQR and was later marketed in the UK under Draper and subsequently Gunsons. In the US it was sold under the Snap-on Brand. I do not know if all these adjusters are exactly the same but I do know that used items make frequent appearances at Autojumbles- by which time they have usually been separated from their instruction sheets so I reproduce the SPQR instructions here. The tool is shown below, its usually supplied with only 2 sockets although others are available as extras and there is space for 5. I have tracked down some others and my set now boasts 5, but I don't know if other sizes were available Tool in its case Case opened- I don't know what the strange ladder like object is for blocking weak valve springs to stop them compressing as the tappet adjustment is closed down to the loud click stage. I've never had to use it. The sockets I tracked down for mine are listed below- seems a bit light on metric sizes...