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Dial test indicators can check movements of plus (+) 0.100 inches (0.254 cm) from zero to __________ 0.100 inches (0.254 cm) from zero.

A. Times (x)
B. Minus (-)
C. Positive (+)
D. A percent (%) of

Answer :

Final answer:

Dial test indicators can measure deviations from zero to plus (+) 0.100 inches and to minus (-) 0.100 inches. The last digit in measurement tools is often an estimated digit, which indicates the precision of the measurement. The plus and minus signs are significant as they indicate direction or deviation.

Explanation:

Dial test indicators are precision measurement tools used to check small movements or variations in an object's position. When a dial test indicator checks movements, it can measure deviations from a set zero point in both directions: positive and negative. Therefore, the correct answer to the question is that dial test indicators can check movements of plus (+) 0.100 inches (0.254 cm) from zero to minus (-) 0.100 inches (0.254 cm) from zero.

Measurement accuracy and the significance of digits are very important in understanding how to read and interpret the measurements taken from such instruments. For instance, if you have a measurement of 17.70 cm, the digits '17.7' are certain and the last '0' is an estimated digit.

In reporting measurements, an estimated digit plays a crucial role as it indicates the precision of the measurement tool used. For example, if a ruler has millimeter markings (1/10 of a centimeter), like the one described as measuring a box at 2.36 cm, it is more precise than a ruler with only centimeter markings.

Understanding the significance of positive and negative signs in different contexts, such as in one-dimensional motion or in measurements, is key. Plus and minus signs indicate direction in motion or deviation from a reference point in measurements.

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