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 “10 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.