The key to efficiently turning out machined products that meet exacting customer specifications—no matter how exotic the metal or intricate the workpiece—is maintaining rigorous quality control from the beginning.
That’s where the TESA INTERAPID 312 dial test indicator comes in—but not where its usefulness ends. Machinists can use the analog metrology tool at the start of the production process to ensure correct positioning of their workpiece as well as at the end to check for any defects.
Such capabilities are crucial for metalworking businesses trying to maintain both productivity and profitability in a market inundated with high-strength materials that can be more difficult to cut and shape at the same time that their available labor force is shrinking, with a worker shortfall expected to reach 2.1 million by 2030.
A best-in-class indicator, the INTERAPID 312 includes a revolution counter; inclined, easy-to-read dial; a jeweled mechanism fitted with ball bearings; and hard steel or tungsten carbide contact points.
On the market for more than 50 years, the device is known for its long-term reliability, says Uwe Burkardt, marketing director for TESA, a unit of Lausanne, Switzerland-based Hexagon that specializes in metrology equipment.
“We have feedback from some customers who say they have used it for 20 years or more,” he explains. “When they use their measurement instruments, they need to be able to trust that the results are exact rather than open to interpretation. Part of what our customers are buying from us is that trust.”
Client confidence is borne out by TESA’s leading position in the global market for precision metrology tools, which include height gauges, calipers, micrometers and dial gauges as well as lever-type dial test indicators such as the INTERAPID 312.
Not only does the device’s one-piece solid case design shield it from the potential hazards of manufacturing environments, but it also has subtler features that make it popular.
Using the INTERAPID 312 during pre-machining setup, with the center of a bore as the reference point, is made simpler because the indicator can be mounted on the machine, the company explains.
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13my first impression was that this was a new english indicator with a 0-10-0 thousandths dial. this was because the dial wasn't yellow. my understanding is that all metric dials are to be yellow, and i've never seen one that wasn't. this is a good way to set up bib mistakes.
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