- Read the main scale. Look for the last whole increment visible before the 0 (zero) mark.
- Read the secondary scale (Vernier) measurement. This is the division tick mark that lines up best with a mark on the main scale.
- Add the two measurements together.
How does a vernier scale work?
How a Vernier Scale Works. The
vernier scale is marked with divisions slightly smaller than the divisions of the main scale
. For example, a vernier scale could have 11 markings for every 10 on the main scale. That’s 10 divisions on the vernier scale for every 9 on the main scale.
Is the vernier scale in MM?
The vernier scale of a metric vernier caliper has a
measuring range of 1 mm
. In the example we will be looking at, the vernier scale is graduated in 50 increments. Each increment represents 0.02mm. However, some vernier scales are graduated in 20 increments, with each one representing 0.05mm.
What is the formula of least count?
Least count of a Vernier scale
How do you read a vernier scale in MM?
The main scale on a Vernier caliper typically tells you the whole number plus the first decimal. Read this just as you would a ruler,
measuring to the zero mark on the sliding (Vernier) scale
. For example, if the 0 on the sliding scale lines up with the 2 inch mark, your measurement is 2 inches.
What is least count of vernier scale?
A tool that can be used to measure outside dimensions, inside dimensions, or depths of holes. The size of the smallest division on a scale. For the main scale on the common vernier caliper this is probably 0.1 cm. With the vernier scale the least count might be
0.002 cm
.
What is the unit of vernier scale?
1, the smallest measurement on the main scale is 0.1 cm or 1 mm. The vernier scale can read to
0.05 mm
. So using both scales, the width can be read to the nearest 0.005 cm (or 0.05 mm).
What is least count of height gauge?
Least count of Vernier height gauge is
0.002 mm
. It have different application in industry like measuring distance between two holes. Height is used to measure vertical distance also.
How do you read Vernier 0.02 mm?
Each of the
50 graduations
on the upper scale indicates 0.02 mm. (Given in this case but you should know how to get it). 0.02 is LEAST Count of the Vernier caliper. (f) Thus, the total dimension is 27 mm+ 0.42 mm.
How do you read scales?
The top measurement is in increments of 100s, the middle is in 10s and the bottom is in tenths. For example, if the top beam reading is 200, the middle beam reading is 10 and the bottom beam reading is 3, the total reading of the object is 210.3 grams.
What is main scale reading?
The main scale reading is
the first reading on the main scale immediately to the left of the zero of the vernier scale
What is the principle of vernier caliper?
The vernier caliper uses the
principle of alignment of line segments
to determine the more accurate reading. The length of the object to be measured is placed in between the two jaws of the vernier calipers. Certain graduation on the vernier scale gets signed with a reading on the main scale.
What is main scale and vernier scale?
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 (0.7 mm). The reading is therefore 3.7 mm.
What do you mean by Vernier constant?
Hint: The vernier constant (V.C.) of a vernier calipers is
the ratio of the smallest division on the main scale to the number of divisions on the vernier scale
. The vernier constant is the least count of the instrument. Using this ratio, we will find out the value of the smallest division on the main scale.
What is the formula of Screw gauge?
The formula of least count of screw gauge is as follows:
Least count of screw gauge = (Pitch)/(number of divisions)
Least count of micrometer screw gauge = (1 mm)/(100) = 0.01 mm.
Why is vernier caliper used?
Vernier calipers are measuring tools used
mainly for measuring linear dimensions
. These calipers come handy in measuring the diameter of circular objects. Their circular jaws fit securely on either side of the circumference of round objects.
