Popular sizes required to gap spark plugs. - Round wire in this gauge permit exact gap checking at all angles.
Lang 6 Wire Gap Spark Plug Gauge Made in USA for Standard Ignition Systems
Universal Spark Plug Gap Tool + Plug Gauge For Most 10/12/14/16 mm Spark Plugs
Craftsman 6-Gap Spark Plug Gauge (.025" to .045"), made in USA - Part # 40816
2 CTA NO. A324 SPARK PLUG GAUGE / GAGE / GAP TOOLS 6 WIRE FREE SHIPPING
Lang Tools (Kastar) 4450A Spark Plug Gap Gauge E-Z Grip
2 CTA NO. A324 SPARK PLUG GAUGE / GAGE / GAP TOOLS 6 WIRE (MARKED A329)
