Zero is the smallest digit. However, zero is not a number. It is a place holder. So, that is not the answer to your question.
The answer depends on the size and manufacturer of the caliper. As the size of the caliper increases, so will the size of its smallest accurate measurement. Most 6-inch calipers can accurately measure down to 0.001 inch or 0.0254 mm.
The least count (LC) of vernier calipers is the smallest measurement that can be accurately read using the instrument. It is determined by the difference between one main scale division and one vernier scale division. For a typical vernier caliper with a main scale division of 1 mm and a vernier scale that has 10 divisions corresponding to 9 mm on the main scale, the least count would be 0.1 mm (1 mm - 0.9 mm). This means that measurements can be taken with a precision of 0.1 mm.
micro meter least count in British system
The formula to calculate the measurement using a vernier scale is: Measurement = Main scale reading + (Vernier scale reading × Least count) The least count is determined by the difference between one main scale division and one vernier scale division. This allows for more precise measurements by accounting for the additional fractional value indicated by the vernier scale.
The least count of a vernier depth micrometer can be calculated using the formula: [ \text{Least Count} = \text{Value of one main scale division} - \text{Value of one vernier scale division} ] Typically, for a depth micrometer, the value of one main scale division is 1 mm, and if the vernier scale has 10 divisions that equal 9 mm, the least count would be: [ \text{Least Count} = 1 , \text{mm} - \left(\frac{9 , \text{mm}}{10}\right) = 0.1 , \text{mm} , \text{or} , 0.01 , \text{cm}. ]
To read the vernier on a theodolite, first ensure that the instrument is level and stable. Locate the main scale and the vernier scale; the reading is determined by finding the line on the vernier that aligns best with a line on the main scale. Count the number of whole divisions on the main scale up to this point and add the value of the aligned vernier division to get the final reading. This process allows for precise angular measurements, typically in degrees or minutes.
0.01mm
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.
Least Count [L.C]:-Least count is minimuim acuurate value meauserd by instrument.Least Count of Vernier Callipers:-The minimum value measured is 0.1mm but nowa days [l.c] is of 0.5mm.'
*Micrometer have a rotary handle and whereas vernier have a slider. *Micrometer is for measuring diameters while vernier is for measuring inside & outside diameter as well as depth. *Least Count of Vernier Caliper is 0.02mm *Least Count of Micrometer is 0.01mm
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
No unit for vernier scale coincidence. But as we multiply it by least count which has unit then we get vernier scale reading with the same unit. Of course main scale reading and vernier scale reading would have the same unit
Least count of vernier caliper= 1 MSD - 1 VSD. Main scale usually would have 1 mm as the minimum division. Such 9 divisions, ie 9 mm would be divided into ten equal parts in the vernier. So VSD = 0.9 mm Hence the least count = 1 - 0.9 = 0.1 mm If the same is to be given in centimetre, then it will be 0.01 cm.
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
To find the sensitivity of a vernier caliper, measure the least count of the caliper (typically 0.02 mm) by dividing the smallest division on the main scale by the number of divisions on the vernier scale. For a micrometer, measure the least count (typically 0.01 mm) by dividing the smallest division on the main scale by the number of divisions on the thimble scale. Sensitivity indicates the smallest change in measurement that can be detected by the instrument.
First we keep the body in between the jaws of the caliper. Then we note the main scale reading and then vernier coincidence. Vernier coincidence is to be multiplied by the least count of the device. This is added with the main scale. That will be the required value of the dimensions of the object.
The least count of the vernier caliper is calculated by dividing the smallest division on the main scale by the total number of divisions on the vernier scale. In this case, 1 cm on the main scale is divided into 20 equal parts, so the least count is 1 cm / 20 = 0.05 cm or 0.5 mm.