Checks Valves and Ring Wear, excessive carbon and late timing for petrol engines, Includes:
2 spark plug adaptors to test more vehicles for 16mm and 21 mm spark plugs;
21/2 inch / 64mm diameter gauge;
Dual scale 0-300lbs and 0-21kgs
Supplied with free blow moulded case to protect the tester when in transit. Case colour may vary.