Accuracy can be one of the most important aspects to ensuring that a
welding or metalworking project runs smoothly. If accurate measurements were
taken, quality products / projects could be achieved. Reading a ruler is important
for exact measurements and knowing how to read small distances in general.
Question: Give some practical reasons why you should know how to read a ruler?
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Answers
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Desk rulers are used for three main purposes: to measure, to aid in drawing straight lines, and as a straight guide for cutting and scoring with a blade. Practical rulers have distance markings along their edges.
Explanation:
Make sure you read the ruler from left to right. If you are measuring an object, align it with the left side of the zero mark on the ruler. The left side of the line where the object ends will be its measurement in centimeters. This way the line thickness will not affect the measurement.
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a 30 cm ruler is known long size scale
it has 30 digit called cm(centimetre) and between one and another is known as millimetre which is 10 small lines between the cm and bellow the cm scale it has inch scale
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