Mechanical dial indicators and attachments
Accurate, rugged, versatile, convenient to use and inexpensive-for
these reasons and more, mechanical dial indicators with bottom
plungers are the measurement workhorses of industrial production.
Electronic indicators and amplifiers have an unmatched ability for
the accurate recording of a great amount of measurement data which
is used in a varity of Statistical Process Control (SPC)
operations.
Application specification factors
1. Regular analog styles with indicating hands are more readable
than digital styles when the measurements are being visually
monitored by an operator.
2. Select the dial size that gives you the readability you need. We
offer five regular dial sizes which will fit most applications that
have both space limitations and readability requirements.
3. Choose the accuracy and readout you need-don’t select a .0001�?or
0.01mm)will do your job.
4. Electronic styles are best when the measurement data needs to be
collected, printed out or stored for future use.
5. Consider any special features you may need-inch or millimeter
reading,special shockless movement, antimagnetic, long range, long
stem, special contacts, special holders, etc. If you don’t see what
you need, please contact our special order department. Even though
we have a broad line of indicators to tackle most jobs, we also do a
lot of special design, catering to the specific needs of our
customers-challenge us !
6. Basically, all dial indicators used worldwide fall into the
following size ranges which relate to bezel diameters. Size 0 is a
smaller dial indicator, having its own dimensions. Size 1 through 4
are AGD dimensions are essentially the same for all manufactures,
except as noted.
7. Accuracy—All indicators should be “loaded�?1/8-1/4 of a turn
before testing or measuring. Tresna dial indicators meet or exceed
all known performance specifications. Most accuracies are specified
plus or minus one graduation over the full range. This basically
means a 2 1/2 turn range. Longer ranges have slightly wider
tolerances. Tresna indicators are at least that accurate , but we
are better than that in the final critical measuring zone of �?0
o′colock to 2 o′colock”from zero.
AGD specifies 2 1/3 turn indicators to cover any particular range.
The reason for this is that in an effort to get the most out of the
indicator, the operator “loads”it to about 1 1/3 turns and sets zero
on his master. The indicator will now show the accurate deviation
for a full revolution, plus or minus.