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because its senstivty is 0.1 mm.......got it or not????
It is 5 mins. Formula : Smallest Division on Main Scale / Number of divisions on Vernier Scale = 1 degree / 12 = 60 mins / 12 = 5 mins.
The difference between one main scale division and one vernier division is called vernier constant. this is the minimum length which can be measured accurately with the help of a vernier calipers. it is also called the least count of a vernier. Value of one main scale division is "1 mm" and value of one vernier scale division is "0.9 mm".So,the value of vernier constant is "1-0.9=0.1 mm".
Least count = 1 Main scale division - 1 vernier scale division Why? The story is very interesting. That has been already explianed by me while answering such a question. Please....
In case for micrometer, principle of pitch is used. Least count could be even micro meter But in vernier caliper, difference of main scale division and vernier scale division is the principle Least count could be 0.02 mm
The value of each main scale divisions is half a degree(30') . The number of vernier scale divisions is 30. 29 main scale divisions are divided into 30 vernier scale divisions (30 VSD = 29 MSD ) Therefore value of 1 VSD = 29/30 MSD. Least Count (L.C.) = 1MSD - 1VSD = 1MSD - 29/30 MSD = 1/30 MSD = 1/30 x 30' (L.C.) = 1' (1 minute)
1mm
LC FOR VERNIER CALIPER-0.1mm LC FOR MICROMETER -0.01 mm L.C- NO OF SMALLEST DIVISION ON MAIN SCALE ------------------------------------------------------- TOTAL NO OF DIVISION ON VERNIER SCALE
LC FOR VERNIER CALIPER-0.1mm LC FOR MICROMETER -0.01 mm L.C- NO OF SMALLEST DIVISION ON MAIN SCALE ------------------------------------------------------- TOTAL NO OF DIVISION ON VERNIER SCALE
because its senstivty is 0.1 mm.......got it or not????
It is 5 mins. Formula : Smallest Division on Main Scale / Number of divisions on Vernier Scale = 1 degree / 12 = 60 mins / 12 = 5 mins.
Least count is referred to as the smallest unit that can be measured by a measuring instrument. It is found by dividing the smallest division on the main scale by the total number of divisions on Vernier calipers.
LC FOR VERNIER CALIPER-0.1mm LC FOR MICROMETER -0.01 mm L.C- NO OF SMALLEST DIVISION ON MAIN SCALE ------------------------------------------------------- TOTAL NO OF DIVISION ON VERNIER SCALE
50
LC= Value of one main scale division Total number of divisions on vernier
We need two readings. One is Main scale reading and the other is vernier scale reading. Main scale reading will be read on the main scale. We need an indicator to read it. Right? The marking ie zero of the vernier is that indicator. So the reading on the main scale which has been just crossed by zero of the vernier is taken as Main scale reading. Now to get VSR, we need vernier scale coincidence. How do we get this? Any one of the divisions of the vernier will be found coincided with some divisions marked on the main scale. We don't worry about that main scale division but we concentrate only on the vernier scale division. This is VSC This VSC is to be multiplied by least count. So VSC x LC gives the VSR Now MSR + VSR gives the accurate reading.
0.1 mm