It is an auxiliary device for making fine adjustment to an instrument, generally by means of a fine screw thread. Used in certain measuring instruments. It is a small moveable scale running next to the main graduated scale which indicates a fractional part of the main scale. An example would be a sextant or barometer
It is the scale on a micrometer.
The modern vernier caliper reads to thousandths of an inch
Yes, a vernier caliper is a measuring tool used to accurately measure lengths of objects. It consists of two jaws, one fixed and one sliding, allowing it to measure dimensions with precision. To use it, slide the object between the jaws then read the measurement where the zero marks on the scales align.
The least value which can be measured from any measuring instrument or device is called its least count. Generally the least count of a vernier caliper is 0.02mm.You can get a least count of 0.01mm in Digital vernier caliper.
The zero correction of a vernier scale is the adjustment needed to align the zero mark of the vernier scale with the zero mark of the main scale when there is no object being measured. It accounts for any offset or error in the alignment of the two scales to ensure accurate measurements.
A Vernier caliper is quite accurate and idiot proof. Part of its accuracy lies in its general ease of use.
Vernier calipers are in use in machine shops throughout the world. Of course, they are gradually being replaced by digital calipers but, plenty are still in use in England.
To use the vernier scale, you find the reading on the fixed scale immediately to the left of the pointer, then you look along the sliding scale until you come to the place where the divisions on the fixed and sliding scales match up, and this gives you the subdivision of the main fixed scale divisions. Thus if the fixed scale is divided into mm, you will be able to read 1/10 mm from the vernier. I suggest you look up Wikipedia 'Vernier Scale' which has illustrations of this
Use a Vernier caliper
Micrometer or vernier caliper
Pierre Vernier
I guess it is found by vernier as it works on vernier theory -Manasa