The 20 Meter Ball Karkar Meter is a measuring device used to measure lengths accurately and in a convenient manner. This tool can be useful in a wide variety of applications, whether in construction and engineering or in general everyday applications. Here is a general description of this meter:

Length: It has a length of 20 metres, which means that lengths up to this range can be measured accurately.
Spherical Ball: It features a spherical (round) ball that helps to withdraw and return the meter easily and smoothly.
Units: Lengths can be measured in different units, such as centimeters, meters, feet, inches, depending on design and needs.
Tape: It usually has a flexible tape that can snap in early when measuring and is easily stretched and retracted.
Handle: It has a comfortable handle that can continue to measure for long periods of time without feeling tired.
Lock: It usually has a lock that can be attached to maintain a current measurement without the need to hold the tape.
The spherical karkar meter is useful in many applications such as measuring areas and dimensions in construction, interior decoration, engineering, and more. Accuracy of measurement and units used should always be considered as needed and device condition checked to ensure accurate performance.