Parts of a Vernier Calliper
The main parts of a vernier Calliper are:
- Main Scale: The main scale is a graduated scale that is used to measure the overall length of an object.
- Vernier Scale: The vernier scale is a second scale that is used to measure small increments of length.
- Fixed Jaw: The fixed jaw is the stationary jaw of the vernier Calliper. It is used to measure the outside of an object.
- Movable Jaw: The movable jaw is the movable jaw of the vernier Calliper. It is used to measure the inside of an object.
- Zero adjustment screw: The zero adjustment screw is used to ensure that the Vernier Calliper is properly zeroed before taking a measurement.
- Locking Screw: The locking screw is used to secure the movable jaw in place after taking a measurement.
- Lower Jaws: The jaws of the vernier caliper, a key feature, include a fixed jaw connected to the main scale and a movable jaw connected to the vernier scale. Designed for a secure grip, the lower jaw primarily measures outer dimensions like diameter, width, and length.
- Upper Jaws: Smaller than the lower jaws, the upper jaws, attached to the top of the vernier scale, include a fixed and a movable part. Primarily used for measuring inner dimensions, the upper jaws are opened to touch the edges of objects like hollow pipes and jars for accurate readings.
- Depth Screw: Measure jar depths easily with the depth rod at the end of the main scale. Place the scale’s edge on the object’s top surface, open the jaws until the depth rod extends to the bottom for an accurate reading.
- Thumb Screw: The thumbscrew, at the bottom of the vernier scale, ensures a secure grip for easy sliding of the jaws.
- Lock Screw: The lock screw’s primary role is to secure the jaws in place once the object is firmly held, facilitating accurate readings.
Vernier Calliper
Vernier Calliper is a precision measuring instrument used to measure the internal and external dimensions of an object. It consists of two main parts:
- A Fixed Jaw
- A Movable Jaw
The fixed jaw is used to measure the outside of an object, while the movable jaw is used to measure the inside of an object. This is a device that is used to measure very smaller values and it can measure the value in the range of 0.1 mm.
In this article, we will learn about Vernier Calliper, its diagram, working, and others in detail.