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it helps in grappling the object with spindle
to cheak the diameter of something
mafanta
The zero error in the vernier calipers and micrometer screw gauge when the O mark on the main scale is not in line with the pointer.
mild steel
it helps in grappling the object with spindle
to cheak the diameter of something
A micrometer (or micrometer screw gauge) measures the volume of a screw.
A micrometer screw gauge is commonly known as a micrometer. This is a form of calipers used for measuring small dimensions. Screw gauge in extensively used in the engineering field for obtaining precision measurements. The article describes the principle and main parts of a basic micrometer screw gauge.
The ratchet is a device which applies a pressure by slipping at a predetermined torque and thus prevents the spindle from moving further.
mafanta
The zero error in the vernier calipers and micrometer screw gauge when the O mark on the main scale is not in line with the pointer.
the inventor of micrometer screw gauge is William Gascoigne.
mild steel
it is 0.50mm
William Gascoigne invented it in the 17th century.
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.