how to read a micrometer model engineering mikes-models

You get 0. because this micrometer (mike) is a 0-1" and therefore any reading on this mike has to be
below 1" (the hours) = the 0 point.

You get the 0.15 as it is above the 1 and below 2 (the minutes) on the fixed engraved shaft, plus the
two segments (each = 25 thou or 0.025) - the minutes. = 0.500

You get the 0.0055 because the reading on the rotating handle shows between the engraved 5 and
the next segment. (the seconds).

Each engraved mark on the shaft is 25 thousandths of an inch. Each engraved mark on the rotating
barrel is 1 thousandth of an inch.

So to summarise, the 0. is because it is a 0 - 1" mike. The 0.15 comes from the main shaft reading a 1 and 2 segments
(worth 25 each) = 0.15 but you must add the reading on the rotating shaft which is half way between the 5 and the next
mark ( six) which brings us niceley to 0.1555"

The method I used, to learn how to use the micrometer, is the 'hours, minutes, and
seconds' method.

Imagine the size of your particular micrometer (mine above is a 0" to 1") as the hours,
then the engraved lines on the shaft as the minute's that leaves the engraved marks on
the rotating shaft as the seconds, then the example shown in the photo below =
0.1555"