If you are doing your job properly, you DO!
Take a measurement with nothing in the gauge. That reading is the zero-error.
Suppose say you have plastic rule new one. There you will be having zero marking. When you have to measure the length of a rod then you would keep zero marking at one end of the rod and the marking where the other extreme of the rod is taken to be length of the rod. say it is at 4 cm. So 4cm is the length. And suppose the ruler is an old one whose edge got damaged. Now you don't have zero marking so visible there. So you have keep the end of the rod at say 1 cm marking. Now the error that we commit is known as zero error. Here the error is positive. ie +1 cm. So as the other end of the rod is at 5cm marking then the correct length is got by applying zero correction. As zero error is +1 cm, then zero correction would be -1 cm So the correct length 5-1 ie 4 cm. Same way in case of vernier, if zero of vernier is at left side of zero of main scale, then the zero error is negative. If zero of vernier is right side of zero of main scale then error is +ve as we have seen in the earlier old ruler case. Same way in case of screw gauge as the head scale zero is above pitch line then error is negative and as head scale zero is below pitch line then zero error is positive.
the correction which is made to get correct measurement after zero error
The scale doesn't start at zero, so you need to compromise or you get a systematic error.
No, you have not any knowledge about spherometer. In spherometer also, similar to other measuring instruments zero error should be considered every time; in order to achieve accurate value.
To find the zero error in a spherometer, place the instrument on a flat surface and check if all the legs touch the surface simultaneously. If there is a discrepancy, adjust the screw until all legs make contact at the same time. This position with all legs touching is considered the zero error.
The zero error of a measuring instrument is the measure that it shows when it should actually be showing zero.
zerro error in a spring balance affects the accuracy in the weight. To find zero error in spring balance, you have to first find the least count of the spring balance and then suspend it freely, if the outcome is +1, the zero error is +1 and if it is -1 ,the zero error is -1.
we can find the zero error by closing the jaw of screw guage if the zero of main scale(MS) is concide with the zero of circular scale (CS) there is no zero error and if they are not concide there is a zero error in screw guage .
If you are doing your job properly, you DO!
The zero error of vernier calliper is defined as :-The zero error is equal to the distance between the zero of the main scale and the zero of the vernier scale.
if the zero of vernier scale lies on the right side of the zero of the main scale , then error is known as a positive error .
if the zero line of vernier scale is not conciding with main scale the zero error exists.Knowing the zero error necessary correction can be made to find correct measurement..Such a correction is called zero correction
A common error is not ensuring the tape measure is aligned straight when taking measurements, which can lead to inaccurate readings. It's important to double-check that the tape isn't sagging or twisted, as this can affect the accuracy of the measurement. Additionally, not accounting for the metal tab at the end of the tape measure can result in discrepancies in measurements.
Take a measurement with nothing in the gauge. That reading is the zero-error.
The answer is in your own question. A divide by zero error is a divide or mod by zero type of error. In MSVC++ it has the error code C2124. Ultimately it is a fatal error and will either produce a compile time error or throw an unhandled exception at runtime.