This article lists some of the major uses of a vernier caliper below:. Vernier caliper is used in engineering research classes to train the school students. Vernier caliper is an important device in the steel industry. It is used to measure the inner and outer dimensions of objects that are made up of steel. It is also used to measure the thickness of steel objects of different shapes. The surgical instruments of the medical sector use vernier caliper because the dimensions of medical instruments need to measure it with utmost precision for medical use.
Scientific Labs use vernier caliper for huge arrays of purposes. For example, to study the effect of thermal variations in different metals that differs in chemical properties. Vernier caliper is also used to precisely measure the objects which are used to join two pieces of two objects thereby employing high skillful precision.
No doubt, the aerospace aviation industry requires extremely high precision. Even a slight change in the dimension of an object can lead to a major damage and also to the things related with it. Various types of vernier calipers with high precise readings like digital dial calipers are used to tackle such kind of damage to the system.
A vernier caliper is usually used to measure the diameter of circular objects. Other than the above-mentioned sectors, there are many more sectors for which vernier calipers are very useful. Along with applications, it is also required to understand the proper working of a vernier caliper. So, check the process to use them here:.
Vernier calipers are very handy tools to use. They require more attention while working with them. Their working can be understood in three simple steps:. Slide Jaws Against the Object: First of all, hold vernier caliper correctly.
Then slide its one of the jaws. Vernier caliper has two jaws. The larger one tightens around the object to measure distance while the smaller one to measure the internal diameter. Put the object in the correct position and tighten the screws. After putting the object, read the main scale lined up with the sliding scale zero. In figure 1 below, the vernier scale below is divided into 10 equal divisions and thus the least count of the instrument is 0. Both the main scale and the vernier scale readings are taken into account while making a measurement.
The main scale reading is the first reading on the main scale immediately to the left of the zero of the vernier scale 3 mm , while the vernier scale reading is the mark on the vernier scale which exactly coincides with a mark on the main scale 0. The reading is therefore 3.
This Java applet will help you to understand how to read a vernier scale. The vernier calipers found in the laboratory incorporates a main scale and a sliding vernier scale which allows readings to the nearest 0.
This instrument may be used to measure outer dimensions of objects using the main jaws , inside dimensions using the smaller jaws at the top , and depths using the stem. To measure outer dimensions of an object, the object is placed between the jaws, which are then moved together until they secure the object. The screw clamp may then be tightened to ensure that the reading does not change while the scale is being read.
Watch this short movie to see how to do this. Here is a nice vernier calipers applet. The first significant figures are read immediately to the left of the zero of the vernier scale and the remaining digits are taken as the vernier scale division that lines up with any main scale division.
Some examples: Note that the important region of the vernier scale is enlarged in the upper right hand corner of each figure. In figure 4 above, the first significant figures are taken as the main scale reading to the left of the vernier zero, i. The remaining two digits are taken from the vernier scale reading that lines up with any main scale reading, i. Thus the reading is In figure 5 above, the first significant figures are taken as the main scale reading to the left of the vernier zero, i.
Note that the zero must be included because the scale can differentiate between fiftieths of a millimetre.
Therefore the reading is In figure 6 the zero and the ten on the vernier scale both line up with main scale readings, therefore the reading is The micrometer screw gauge is used to measure even smaller dimensions than the vernier callipers.
The micrometer screw gauge also uses an auxiliary scale measuring hundredths of a millimetre which is marked on a rotary thimble. Basically it is a screw with an accurately constant pitch the amount by which the thimble moves forward or backward for one complete revolution.
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