Nice! I use a caliper, you can use the stem that slides out of the base to measure it easy. But without a caliper the penny trick would work pretty slick. So, one penny is .040" ?
LOL......Yea i always use tools also and never thought of the penny trick until that member said that's what he had done. I measured and did come out with .040. Not sure how good the Govt. quality control is though.....:D.