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An intervalometer is usually a handheld device with a long cord that plugs into a cameraâs auxiliary port. It looks and works very similar to a remote trigger release. The type of intervalometer youâll need depends on your type of camera.
The interval scale possesses all the characteristics of an ordinal scale, but it also allows the researcher to compare the difference between the objects. The interval scale is characterized by a constant or equal interval between the values of the scale. This means the difference between any two values is equivalent to the difference between any two adjacent values of an interval scale. Such as, the difference between 1 and 2 on a scale is same as that of the difference between 3 and 4 on the scale. The most common example is a Celsius temperature scale in which the difference between the values is same. In the case of interval scales, the distance between the descriptors is also known.