|This professional heavy-duty spark plug gap setting tool is completely portable for field use, yet precise enough to set gaps to within 0.001". The precision screw drive with its comfortable knurled knob gaps any type of Massive Electrode Aviation Spark Plug reliably and without any danger of damaging the spark plug. Simply screw the spark plug into the base of the tool and turn the knob to the required gap width. Complete kit includes ATS420 Gapping Tool plus ATS450 wire feeler gauge.|
I prefer handle it with hands than wise table.
easy to operate dont need a vise to hold all the mechanism, I like it very much
Inexpensive and easy, just dont undergap.
Its a great tool when you are in the field needing to gap sparkplugs it is not very quick but it definitely gets the job done
It works but needs to be redesigned to allow access for the wire gauge. I found myself taking the plug out to take a good gap measurement.