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There is no negative zero or positive zero, zero is just zero so you can take it off.

For example: 3-2-0= just 3-2

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Q: How can you correct a positive zero error?
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What is Positive zero error?

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 .

What is zero correction?

the correction which is made to get correct measurement after zero error

How you remove positive zero error?

Positive zero error means, instead showing zero it shows some value more than zero. Hence positive. Suppose if it shows some reading say 0.03 units. then while correcting we have to subtract the above from the observed reading. So correction is adding negative error.

What does negative zero error mean?

There can't be a negative zero. zero is neither negative nor positive.

When a positive number is subtracted from zero what is the correct answer?

When a positive number is subtracted from zero the result is a negative number.

What is Zeroing 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.

Why is use of zero error necessary in a measuring instrument?

Zero error is necessary for measuring instruments for measuring accurate results because it helps to check that the instrument which we are using is whether correct or wrong

What do you understand by zero error of a measuring instrument?

It is a defect in a measuring device (Vernier Callipers & Screw Gauge) & zero error is caused by an incorrect position of the zero point.

What is a zero pair?

The correct term isA zero pair is when one pairs a positive counter and a negative counter.HOPE THAT HELPED!!!**Calypso214

How do you take readings from a micrometer screw gauge?

The first step is to find the zero error and hence the zero correction. Rotate the micrometer until the fixed and movable jaws contact each other - not too hard and not too soft but just right, you should geta feel for this. Rarely will a micrometer will read zero. You need to figure out the zero error. It may be positive or negative. If the zero error is positive then the zero correction is negative and vicevers. Now open the micrometer and insert the object to be measured and close the micrometer with ideally the same sense of pressure you felt when you found the zero error. Now read the micrometer. You add the zero correction to get the true value.

How do you find the zero error and zero correction in sgrew gauge?

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 .

Define the term zero error of vernier calliper?

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.