it depends on the manual/guide you ar using, if its haynes then its normally measured in mm. use a set of feeler gauges to meausre the gap right then use a smaller one to wiggle the gap bigger or tap it on a hard surface gently to close the gap :D
The Spark Plug Gap.044 (In thousandths of an inch)
The Spark Plug Gap.035 (In thousandths of an inch)
The Spark Plug Gap.040 (In thousandths of an inch)
The Spark Plug Gap.044 (In thousandths of an inch)
The Spark Plug Gap.028 (In thousandths of an inch)
Spark plug gap is .054. 54 thousandths of an inch.
The Spark Plug Gap.060 (In thousandths of an inch)
The spark plug gap is .050 inch.
The Spark Plug Gap.060 (In thousandths of an inch)
The Spark Plug Gap.032 (In thousandths of an inch)
The Spark Plug Gap.060 (In thousandths of an inch)
The Spark Plug Gap.044 (In thousandths of an inch)