Champion Circular Spark Plug Gap Tool
A simple tool which can be used to adjust and measure the gap of Spark Plugs with standard copper/nickel electrodes. Use the bevelled hole to open the electrode gap and measure using the circular 'ramp' and index markings.
Index markings are both imperial inches and metric/mm (on reverse).
**Important** DO NOT use this type of tool with precious metal electrode spark plugs - that includes fine wire platinum, gold and especially Iridium spark plug electrodes! You will damage or break off the centre electrode.
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