![]() Precise conversions are used for exact technical analysis. ![]() Precise and approximate (in parentheses) metric conversions are in the next column. Conversions between these measurements are simple decimal locations based on factors of 10. Thus, all dimensions of length can be expressed as variations of a meter. For example, a long distance is expressed in kilometers (1,000 meters) or a short length may be expressed in millimeters (1/1,000 of a meter). Metric units can be modified by adding a prefix to simplify expressions of very short or long units. So we often need to make conversions between our system and the metric system. The United States is the only major trading nation that does not use the metric system. Most of the world does its measuring in meters, grams, and liters.
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