(INFP stands for Introvert, iNtuitive, Feeling, Perceiving and represents individual's preferences in four dimensions characterising personality type, according to Jung's and Briggs Myers' theories of personality type.)
The least count is the value of the smallest scale division of the measurement instrument. Example: a ruler with marks 1 millimeter apart has a least count of 1 millimeter The least count of an instrument is the size of the smallest scale division on the instrument. The smaller the least count the more precise the instrument is said to be. For example a metric ruler which has millimeter marks has a least count of 1 mm or 0.1 cm. and when properly used it can make more precise measurements than one with centimeter marks.
Look at the numbers on a metric ruler. Each number on a metric ruler corresponds to a full centimeter. 1  Metric rulers only deal with centimeters and millimeters, so it usually makes sense to deal with rulers when measuring centimeters. 2  You could also use a meter stick instead of a ruler, though.