Brown & Sharpe TESA 61.90041 ALESOMETER LCD Depth Gauge, 0.240-3.95" Range, 0.001mm Graduation, 0.004-0.005" Accuracy

The Brown & Sharpe TESA ALESOMETER LCD Depth Gauges, depending on the model, have a measurement range of 0.240 to 3.95" or 3.95 to 11.80", and a resolution (or smallest graduation interval) of 0.00005" (0.001 mm). Different measuring heads are used for different ranges and the accuracy varies, depending on the head used/range as follows: model 61.90041: 240 to 1.58" + or - 0.004mm, 1.58 to 3.95" + or – 0.005mm; model 61.90041: 3.95 to 5.9" + or – 0.006mm, 5.90 to 7.88" + or – 0.007mm, 7.88 to 11.80" + or – 0.008mm. The heads of these gauges reference metric units, while the LCD interface displays in both metric and inches. The measuring head faces are either made of hardened steel or, in the upper measuring ranges, are carbide tipped for accurate measurements. The gauge has a button to lock the display for accurate measurements and is bi-directional. The gauges conform to the Deutsches Institut für Normung (DIN) 863 T4 (style C1), Ingress Protection 54 (IP54) (IEC 60529) or IP40 with use of digital output, and European Conformity (CE) marking standards. The digital interface supports RS232 data output. The units include a 3V lithium battery and a protective plastic case. Depth gauges are typically used in manufacturing, machining, and mechanical engineering.

Depth gauges are precision measuring instruments used to determine the depth of any shape that has a step, groove, or slot. These gauges often take the form of sliders that travel on a measuring beam or rods, are moved to position by hand, and then adjusted with a calibrated screw. The base of the gauge rests at the top of the shape whose recession is to be measured, while the beam or rods extend to the bottom of the recession to determine the measurement. Gauge position is read from a graduated scale, dial, counters, or an electronic display.

Brown & Sharpe manufactures precision measuring equipment and metrology hand tools. The company, founded in 1833, is headquartered in North Kingstown, RI.