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The same observations and technique apply to this type of caliper, as for the above inside caliper.
With some understanding of their limitations and usage, these instruments can provide a high degree of accuracy and repeatability.
They are especially useful when measuring over very large distances, consider if the calipers are used to measure a large diameter pipe.
A vernier caliper does not have the depth capacity to straddle this large diameter while at the same time reach the outermost points of the pipe's diameter. In the metalworking field, a divider caliper, popularly called a compass, is used in the process of marking out locations.
In machine-shop usage, the term "caliper" is often used in contradistinction to "micrometer", even though outside micrometers are technically a form of caliper.
It is used in many fields such as mechanical engineering, metalworking, forestry, woodworking, science and medicine.Also existing colloquially but not in formal usage is referring to a vernier caliper as a "vernier" or a "pair of verniers".In imprecise colloquial usage, some speakers extend this even to dial calipers, although they involve no vernier scale.On a nautical chart the distance is often measured on the latitude scale appearing on the sides of the map: one minute of arc of latitude is approximately one nautical mile or 1852 metres. An ECG (also EKG) caliper transfers distance on an electrocardiogram; in conjunction with the appropriate scale, the heart rate can be determined.A pocket caliper versions was invented by cardiologist Robert A. Oddleg calipers, Hermaphrodite calipers, or Oddleg jennys, as pictured on the left, are generally used to scribe a line a set distance from the edge of a workpiece.
The zero point error must always be subtracted from the primary reading.