Patent ID: 6115934
Filing Date: 2000-09-12
Classification: G01B

Abstract:
A micrometer comprising a main body holding an anvil at one end portion thereof and a spindle moving to and away from the anvil at the other end portion thereof through an inner sleeve, an outer sleeve covering the outside of the inner sleeve and fixed thereon, and a thimble unitedly connected to the spindle on the outside of the outer sleeve in a manner that the thimble rotates, said outer sleeve being provided with graduations and numerals on the outer circumferential surface along the axial direction, and the thimble being provided with graduations and numerals on the outer circumference thereof,wherein at least one of said outer sleeve and said thimble comprises a base tube formed of a first resin and having the graduations protruding toward the outside on the outer circumferential surface thereof at predetermined intervals, and an outer skin formed of a second resin having a different color from that of the first resin and covering the outer circumference of said base tube except for the graduations, with the numerals formed adjacent to the graduations, wherein the base tube and the outer skin are integrally molded.