Works Perfect

I got this for my husband. He loves all things tools as long as they work well.
This is meant to check and test the thickness of things. He uses it for spark plugs to test the gap inbetween them. He said it must have the correct amount of gap for the spark to help the engine to run more efficiently.

He said he could use it on the valve of an engine to check the clearance between the valve and top which controls how much gas is taken in and released.

He is very happy with this purchase. He said he would buy it again, so we think a five star rating is very fair.