Since I've started making things with the 3d printer, I've found the
need for measurement more accurate than a ruler or a tape measure can
provide, particularly of non-cuboid shapes.
The obvious answer is a micrometer or caliper of some sort. Most
calipers now seem to be electronic, but an old-fashioned vernier scale
is still available, no less accurate, and more pleasing to my way of
thinking. (Not to mention not needing batteries.)
One reads the millimetre scale to the zero on the vernier, then
matches up the vernier divisions with the main scale divisions to get
the sub-millimetre measure if needed. (Here, allowing for parallax,
I'm measuring 43.72mm.)
This particular model will measure inside or outside distances up to
150mm, or the depth of a hole, to 0.02mm accuracy.
Comments on this post are now closed. If you have particular grounds for adding a late comment, comment on a more recent post quoting the URL of this one.