What is a dial gauge? and how to use the dial gauge?

What is a Dial Gauge?

Dial gauge is a tool to measure the flatness of the work piece. It has a dial and scale similar to a watch. and has a resolution in millimeters This makes dial gauges often used to measure workpieces with production standards. Including checking the accuracy of the machine tolerance, including measuring the planeness, parallelism, and offset distance, such as measuring the center of an object before turning. Zero precision check Check for parallelism, check dimensions, and measure eccentricity, etc.

dial gauge how to use

  • Install the dial gauge in a ready-to-use position.
  • Gently insert the gauge block with the size we want to measure.
  • and then turn to set the long hand to point to the number 0
  • remove gauge block and insert the real workpiece instead to read workpiece value

how to read dial gauge

1 around the dial gauge has a value of 1 mm and every scale line has a value of 0.01 mm. How to read the scale when the long hand rotates clockwise when measuring the workpiece indicates that the value being measured will be a positive value or increase. And if the needle is turned counterclockwise, the value will decrease if it is based on 15 mm from the gauge block.
The long hand rotates clockwise to the number 10 with an increase of 0.01 mm x 10 = 1 mm, meaning that the work layer has a size of 15 + 1 = 16 mm.
The long hand rotates counterclockwise to the number 90, indicating that the value being measured is 15 - 1 = 14 mm.

components dial gauge

1. Case (Case) The outermost part used to protect the internal device. no damage

2. Scale dial (Graduated Scale) , which is divided into 100 channels, when the long hand has rotated 1 full cycle, the value will be read 1 millimeter.

3. Long needle (Pointer) used to measure the discrepancy of the workpiece.

4. Small dial gauge used to indicate the value when the long hand has rotated 1 complete cycle.

5. Short needle (Small dial pointer) pushes short, used to measure the circumference of the long needle, how far it has moved. When the long hand moves every 1 round, the short hand will increase by 1, which is in millimeters.

6. Stem (Stem) The part used to hold the dial gauge stable while measuring the value of the workpiece.

7. Probe (Contact Point), the part in contact with the workpiece for measurement.