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techtalk:ref:tools109 [2018/05/29 03:52] hippysmack |
techtalk:ref:tools109 [2018/11/02 16:41] hippysmack [Calipers] |
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| * If you have determined 'zero' needs to be re-set on standard dial or electronic calipers, make sure the jaws are clean and are pressed against each other. For manual calipers, loosen the screw holding the faceplate and turn the face to zero, tighten and then snap it back several times to make sure it zeros every time. For digital calipers the procedure is the same except when ready you simply press the 'zero' button. Verniers have no faceplate to re-set. | * If you have determined 'zero' needs to be re-set on standard dial or electronic calipers, make sure the jaws are clean and are pressed against each other. For manual calipers, loosen the screw holding the faceplate and turn the face to zero, tighten and then snap it back several times to make sure it zeros every time. For digital calipers the procedure is the same except when ready you simply press the 'zero' button. Verniers have no faceplate to re-set. | ||
| - | |{{techtalk:ref:tools:gear_driven_manual_caliper.jpg?direct&300|}}|{{techtalk:ref:tools:vernier_caliper.jpg?direct&300|}}|{{techtalk:ref:tools:digital_calipers_by_screw_loose_dan.jpg?direct&300|}}| | + | |{{techtalk:ref:tools:gear_driven_manual_caliper.jpg?direct&300|}}|{{techtalk:ref:tools:vernier_caliper.jpg?direct&300|}}|{{:techtalk:ref:tools:dial_caliper_2_by_reddtigger.jpg?direct&300|}}| |
| - | | Gear driven manual dial caliper ((photo by Hippysmack)) | Vernier slide caliper ((photo by Hippysmack)) | Digital Caliper (( photo by Screw Loose Dan http://xlforum.net/forums/showthread.php?t=1803692&page=21)) | | + | | Gear driven manual dial caliper ((photo by Hippysmack)) | Vernier slide caliper ((photo by Hippysmack)) | Dial Caliper with inches and millimeters ((photo by ReddTigger of the XLFORUM http://xlforum.net/forums/showthread.php?t=1999530&page=5)) | |
| + | |{{techtalk:ref:tools:digital_calipers_by_screw_loose_dan.jpg?direct&300|}}| | ||
| + | | Digital Caliper (( photo by Screw Loose Dan http://xlforum.net/forums/showthread.php?t=1803692&page=21)) | | ||
| - | ===== Reading a caliper ===== | + | |
| + | ===== Reading a Caliper ===== | ||
| * Open the caliper slightly larger than the piece your measuring, hold the piece against one jaw while pulling the other jaw against your piece. Slightly snug the jaws to the piece and record a reading. Repeat this several times to insure you have a true reading while snapping jaws back to zero before opening them up again. | * Open the caliper slightly larger than the piece your measuring, hold the piece against one jaw while pulling the other jaw against your piece. Slightly snug the jaws to the piece and record a reading. Repeat this several times to insure you have a true reading while snapping jaws back to zero before opening them up again. | ||
| * **Reading Verniers**: In the left pic below, a measurement was taken at 10.770". Read the numbers on the slide rule and add the numbers in the window (which on this model amounts to one thousandth each). As you can see, your watching for the number that matches up with the correct line between the window and the slide rule. The sum of 2 initial readings taken reveals the final reading on this type of caliper. Check the gradients before using to verify (IE metric vs U.S.). In the left pic below, 10.50" is the closest accurate reading on the slide rule and 0.020" from the window equals 10.770". Verniers can be used for inside or outside measurements. Outside measurements are taken between the jaws and inside measurements are taken from the outside edge of each jaw. The slide rule gradients are different on each side to accurately show the readings for each choice measurement taken. Notice above the right pic below showing the words 'outside'. The opposite side is marked 'inside'. | * **Reading Verniers**: In the left pic below, a measurement was taken at 10.770". Read the numbers on the slide rule and add the numbers in the window (which on this model amounts to one thousandth each). As you can see, your watching for the number that matches up with the correct line between the window and the slide rule. The sum of 2 initial readings taken reveals the final reading on this type of caliper. Check the gradients before using to verify (IE metric vs U.S.). In the left pic below, 10.50" is the closest accurate reading on the slide rule and 0.020" from the window equals 10.770". Verniers can be used for inside or outside measurements. Outside measurements are taken between the jaws and inside measurements are taken from the outside edge of each jaw. The slide rule gradients are different on each side to accurately show the readings for each choice measurement taken. Notice above the right pic below showing the words 'outside'. The opposite side is marked 'inside'. | ||
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| | 10.770" reading on a vernier caliper | 4.915" reading on a vernier caliper | | | 10.770" reading on a vernier caliper | 4.915" reading on a vernier caliper | | ||
| - | ====== Dial Depth Gauge ====== | + | ====== Dial Indicators ====== |
| + | (From time to time, you can spot check dial indicator accuracy with a feeler gauge). ((DirtyCory of the XLFORUM http://xlforum.net/forums/showthread.php?t=1297584&page=8)) | ||
| + | ===== Dial Depth Gauge ===== | ||
| **Application** | **Application** | ||
