The Calibrated Eye
The purpose of this exercise is to train your eye to recognize small sizes for what they are.
To do this exercise one needs a lot of mixed spacing washers. The sizes found on our TTMs
are .001, .005, .010, .016, .030 and .040 with occasionally some other odd sizes.
A dial or digital caliper is also needed. Small containers or pieces of paper to separate the
washers into different piles are also needed.
With all the washers mixed in a pile, start measuring with the caliper. Look at the edge of each
one during the measuring process. Separate the washers into piles of washers that measure the
same. After a short time, look at the washer before measuring it and see if you know what it
will measure before it is put in to the caliper. Keep doing this until you get good.
Congratulations you now have calibrated your eyes. Recalibration may be needed if not used
on a regular basis.