I was advised to check the valves on my bike. I need a feeler gauge, I have looked on eBay and found these, I just want to know if it is suitable.

http://www.ebay.co.uk/itm/DRAPER-10-BLADE-METRIC-FEELER-GAUGE-SET-GUAGE-73988-/160660458906?pt=UK_Hand_Tools_Equipment&hash=item25681c0d9a

There fine.

Cheers, I'll get it bought. They're were that many, ones with about 50 bits so I wasn't sure which type.

Have you checked that by using combinations of those gauges you can get the right gap specification for your bike grouch?

No I'm going to look in my manual.