OriGlam Spark Plug Tester, Adjustable Ignition System Coil Tester, Coil-on Plug Ignition Spark Circuit Tester, Autos Diagnostic Test Tool

Done the job perfectly.

Great

Can be a bit awkward to fit in some cases (I use it on small engines for the likes of lawnmowers & strimmers, where plug sizes & HT lead length can be an issue) but works very well.

Found this useful for checking leads and plug caps. CBF 600s

This is a cheap tester and I guess you get what you pay for.It didn't work out of the box.1. The adjustable screw threads were painted and so there was no continuity between the adjustable "needle" and the earth lead. Some gentle "cleaning" sorted that.2. The adjustable needle rattles around within the case. This does affect the stability of the reading and the needle is prone to move in/out under vibration.3. The adjustment gauge (as mentioned in other reviews) is inaccurate. If testing to a specific gap, you will need to measure that yourself.With some fettling it can be made to work, but disappointed with the quality of what was delivered compared to what I expected having read previous reviews.

Works well for something that doesn't cost much at all. Saved me from buying a coil pack when the issue was somewhere else

Used it to verify my spark kv against a more expensive tester. Seemed pretty accurate to me.Simple device but works well.

It does work, but the adjustable screw needs to be tightened up. I'm going to fit a spring into it to fix the problem. It will come in handy.