Patent ID: 7963047

Claim:
A braking device of a measuring instrument comprising a body case and a spindle that penetrates the body case to be axially and reciprocably displaceable and includes a probe at a first end, the braking device comprising: a cylinder of which a first end is attached to a body case for accommodating a second end of a spindle; a piston provided on the second end of the spindle and accommodated to be reciprocably displaceable within the cylinder; a closing member provided on a second end of the cylinder to form a damper chamber between the piston and the closing member; a shaft that is opposite to the spindle by interposing the piston therebetween and penetrates the closing member; and an operating section provided on a distal end of the shaft, wherein a clearance is provided between the closing member and the shaft for circulating air between the damper chamber and an outside, and the closing member is displaceable in an axial direction of the shaft and contactable to a second end surface of the cylinder.