Patent ID: 8245413

Claim:
A heat insulating cover for a micrometer, the micrometer including a U-shaped frame supporting an anvil and a spindle at tip end portions thereof so that the anvil and the spindle are coaxially opposed to each other, wherein the heat insulating cover is shaped to accommodate a bottom portion of the frame, and is detachable with respect to the frame, said heat insulating cover covering a bottom face of the frame while supporting the bottom portion of the frame by sandwiching from both sides of the frame; a first cover portion and a second cover portion engaging with a first face and a second face of the frame, respectively, the first face and the second face opposed to each other; an elastic body in each of said first and second cover portions and biasing the first cover portion toward the first face and the second cover portion toward the second face; and, wherein the elastic body comprises a flat spring or a coil spring provided from the first cover portion to the second cover portion so as to cover the bottom face of the frame.