A feeler gauge is used to accurately measure the thickness of a gap between two points where the measurements are only fractions of a millimetre. It can also be used to provide the correct thickness if this gap needs to be adjusted, for instance with spark plugs, distributor caps or even with valve clearances. When building or servicing engines and other machinery gaps and tolerances must be accurately measured. Your measurements can be spot on thanks to the range of feeler gauges from ToolPRO. The metric feeler gauge set is ideal for easily measuring larger gaps, such as spark plugs. It contains 25x blades measuring from 0.04mm to 1mm in thickness. For even larger gaps, blades can be stacked as necessary. Taking a measurement using a feeler gauge is easy. First, ensure that the gap to be measured is free of dirt or greasy build up. Make sure that the feeler gauges are clean and well-oiled also. Start by finding the closest possible blade that will fit in the gap. If the blade moves too freely within the gap, stack multiple blades until a snug fit is obtained. Feeling for resistance is key here. The proper resistance can be likened to pulling a sheet of paper from under a magazine, or peeling packing tape off a roll. Now, add up the total thickness of all blades used and check this against a workshop manual to determine if your part is within specification.
Convenient fan style construction with steel cover to protect blades during storage
25 steel blades ranging from 0.04 to 0.95mm to suit metric gap specifications