Set spark plug gaps with more confidence and less guesswork. This coin-style gauge gives you a simple way to check spacing and keep tune-ups on track.

Its slim format fits easily in a tool roll, glove compartment, or garage drawer, so it stays close when you need it.

Exact gap checks that make tune-ups cleaner and faster

✅ Get precise spark plug spacing for cleaner, more consistent ignition

✅ Keep engine performance more stable during routine maintenance

✅ Check gap size quickly with clear calibration markings

✅ Carry it easily in a pocket, toolbox, or tool roll

✅ Use the 0.02" to 0.10" range for a wider range of plug types

✅ Save space with a slim 3mm profile and 37.5mm diameter

✅ Rely on a solid metal tool that suits repeated use

This tool keeps the process straightforward. Slide the tapered edge into the spark plug gap, read the measurement, and adjust the electrode as needed. The round coin shape makes it easy to rotate and handle while you work.

It fits well into DIY maintenance at home or in the garage, especially when you want a quick reference without bulky measuring equipment. The etched markings stay easy to read, so you spend less time checking and more time finishing the job.

The compact size also makes it practical as a backup tool. Keep it with your main kit, store it in the glove compartment, or leave it near your workbench for fast access during tune-ups.

Keep your spark plug adjustments simple and get dependable gap readings every time.

Clear markings keep gap checks quick and simple.

Thin enough to store without taking up space.

Easy-to-read scale supports accurate adjustments.

Measure the gap directly and adjust with confidence.

Simple handling makes tune-ups feel less involved.

Metal construction gives you a solid feel in use.

Small enough to keep nearby for regular maintenance.