This micrometer is well made, not perfect, but measures everything within tolerances I understand. The dual rotation of the barrel (2 x 50 for hundredths of a millimeter) practically ensures that you get an accurate measurement that pushes the upper limit of what the human brain can actually process. Show it and watch the chicks come running - I'm telling you, women can't resist a precise micron. He arrived Thursday, Saturday night we were on the beach in front of the water me and Crewe. Of course, that baby was in my pocket. The conversation falters, so I take it out and measure the thickness of Amanda's pint: 1.86mm. She was impressed - the rest is history. Every woman knows that a man with 1/100th of a millimeter tolerance is a mysterious and exciting man. Thank you OMGAI for making this night magical!