- The micrometer measures the width of any small object. An example shown on the University of Toronto website uses a pencil for illustration. The micrometer has two measuring rods: one is stationary, and the other adjusts. Place the pencil between the rods and move the thimble clockwise, which causes the measuring rod to move toward the pencil. The rod needs to touch the pencil and hold it without applying too much pressure. A locking lever holds the pencil in place. The correct amount of pressure is applied with the assistance of a friction screw. Always use the friction screw to ensure an accurate measurement.
- Mechanical engineering requires knowledge of the external dimensions of numerous objects. Examples include thickness of blocks and shafts along with wires. Measuring these objects requires an understanding of how the micrometer functions. The thimble rotates around the cylinder, which has two lines. The top line is marked in increments of one millimeter and the bottom line in increments of 0.5 millimeter. Reading the two lines together produces the measurement.
- Mechanical engineers require internal measurements in order to accomplish their goals. One such internal measurement involves the opening of a hole. Another internal dimension, also referred to as a depth measurement, is the depth of an item.
- The micrometer was invented in the 1600s by William Gascoigne. It was used in telescopes to measure distances between stars and was adapted for use in measuring small objects by Jean-Louis Palmer. It is extremely accurate, with an error of 0.003 mm, or 3 micrometers, as reported by the University of Toronto.
- Advertisement -
- Advertisement -