90 degrees
When using a small hole gauge, the micrometer is taken perpendicular to the split in the ball. The split should be aligned at 90 degrees to the micrometer in order to accurately measure the diameter of the hole being checked.
The maximum reading of a micrometer screw gauge depends on the number of divisions on the thimble and the barrel. Typically, it can measure up to 25 millimeters with a resolution of 0.01 mm on the main scale and an additional fraction of a millimeter based on the thimble divisions.
Difficult to explain without diagrams, but the micrometer relies on an accurate screw which advances the caliper a precise amount with each revolution. So you turn the screw until the object is lightly held, then read the axial scale and add on for the number of screw turns above the nearest scale reading. The most accurate type also have a vernier scale for very small distances. I suggest you look at Wikipedia 'Micrometer' which has a thorough explanation with diagrams.
The smallest possible reading on the thimble scale is typically 0.01 mm, which represents one division on the scale. The largest reading depends on the maximum range of the micrometer but can be in the range of several millimeters.
The temperature at which Celsius and Fahrenheit give the same reading is -40 degrees.
When using a small hole gauge, the micrometer is taken perpendicular to the split in the ball. The split should be aligned at 90 degrees to the micrometer in order to accurately measure the diameter of the hole being checked.
A digital micrometer is the easiest to read as it displays the exact reading on a screen.
My micrometer reads out to ten-thousandths of an inch.EX: .2501".This is 250 thousandths plus 1-ten thousandths of an inch.I never guesstimate a reading...Hope this helps
All you need to do is make contact. Tightening will give you a false reading and eventually damage the micrometer.
the spindle must be tighten to avoid slightly changes on the reading
First calibrate the micrometer by dialing the spindle to zero and adjusting the anvil until it is flush against the spindle. Measure the screw until the ratchet begins to click and take the first reading. This reading can then be compared to a machining book to verify the pitch diameter.
The maximum reading of a micrometer screw gauge depends on the number of divisions on the thimble and the barrel. Typically, it can measure up to 25 millimeters with a resolution of 0.01 mm on the main scale and an additional fraction of a millimeter based on the thimble divisions.
Difficult to explain without diagrams, but the micrometer relies on an accurate screw which advances the caliper a precise amount with each revolution. So you turn the screw until the object is lightly held, then read the axial scale and add on for the number of screw turns above the nearest scale reading. The most accurate type also have a vernier scale for very small distances. I suggest you look at Wikipedia 'Micrometer' which has a thorough explanation with diagrams.
First calibrate the micrometer by dialing the spindle to zero and adjusting the anvil until it is flush against the spindle. Measure the screw until the ratchet begins to click and take the first reading. This reading can then be compared to a machining book to verify the pitch diameter.
i need to convert 100 microns sheet to gramper meter squre ie.
To avoid lifting of the bridge of the depth micrometer, make sure that the spindle is correctly positioned before taking a reading. The spindle should be parallel to the base of the depth micrometer and should be positioned directly over the object being measured. Make sure that the object being measured is firmly supported and that the work surface is free of debris that may interfere with the depth micrometer’s operation. Before taking a reading, check that the anvil and spindle are perfectly aligned with each other. Avoid pressing down on the depth micrometer too hard as this can cause the bridge to lift. Always use the correct size micrometer for the job and the correct size anvil for the object being measured. If the bridge does start to lift, stop and correct the problem before taking any further readings. Before taking a reading, always make sure that the depth micrometer is properly zeroed. When using a depth micrometer, always keep your hand away from the spindle and anvil. Make sure that the depth micrometer is properly maintained and stored in a dry, clean environment. Lastly, always use the depth micrometer with care and caution to avoid any damage or inaccuracy.
The smallest possible reading on the thimble scale is typically 0.01 mm, which represents one division on the scale. The largest reading depends on the maximum range of the micrometer but can be in the range of several millimeters.