For example the length of a stick can be calibrated by comparing it to a standard that has a known length.

The process is continued for the known length of the message or while the remaining result is positive.

A 720-metre section, out of the known length of 1,500 m, has been opened to the public since 1950.

This species attains a known length of 1.83 meters (6 ft), though larger specimens have been reported.

There are 11 gaps, all of known length and fairly short.

The largest known standard length for the species is 6.7 centimetres (2.64 inches).

Because the fragments are of known length, the distance between the two end reads from each fragment is known.

The only other thing you would need is another object on a slide of known length or diameter.

In the surveying method called triangulation, a base line of a known length is established.

This, with the known length of a year, can be easily converted to the time needed to travel from the Sun to the Earth.