Top 10 Best Digital Calipers - Jul 2019

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Here are our top 10 best Digital Calipers in 2019 reviews. Take a look at our recommended items and learn more about the features of each to help you select the item to buy.

Rank Product Name Score
1 First Place Digital Caliper, Water Resistant, Fractions, 6"/150mm, Durable Stainless Steel IP54 Electronic Measuring Tool Digital Caliper, Water Resistant, Fractions, 6"/150mm, Durable Stainless Steel IP54 Electronic Measuring Tool
By EAGems
9.7
Score
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2 Digital Caliper 6 Inch Measuring Tool, Polishing Finish Stainless 2DAY SHIP Digital Caliper 6 Inch Measuring Tool, Polishing Finish Stainless 2DAY SHIP
By REXBETI
9.5
Score
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3 Best Value VINCA DCLA-0605 Quality Electronic Digital Vernier Caliper Inch/Metric/Fractions Conversion 0-6 Inch/150 mm Stainless VINCA DCLA-0605 Quality Electronic Digital Vernier Caliper Inch/Metric/Fractions Conversion 0-6 Inch/150 mm Stainless
By VINCA
9.3
Score
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4 iGaging IP54 Electronic Digital Caliper 0-6" Display Inch/Metric/Fractions Stainless Steel Body iGaging IP54 Electronic Digital Caliper 0-6" Display Inch/Metric/Fractions Stainless Steel Body
By iGaging
8.9
Score
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5 Electronic Digital Caliper 6 inch - Full Stainless Steel Metal Vernier Caliper Measuring Electronic Digital Caliper 6 inch - Full Stainless Steel Metal Vernier Caliper Measuring
By Tcisa
8.7
Score
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6 Electronic Digital Caliper 6 inch/150 mm Measuring Tool Hardened Stainless Steel Caliper Electronic Digital Caliper 6 inch/150 mm Measuring Tool Hardened Stainless Steel Caliper
By RUBEDER
8.2
Score
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7 iGaging ABSOLUTE ORIGIN 0-6" Digital Electronic Caliper - IP54 Protection / Extreme Accuracy iGaging ABSOLUTE ORIGIN 0-6" Digital Electronic Caliper - IP54 Protection / Extreme Accuracy
By iGaging
8.0
Score
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8 Aickar Digital Caliper, Stainless Steel Electronic Digital Caliper, Digital Calipers 6 Inch Aickar Digital Caliper, Stainless Steel Electronic Digital Caliper, Digital Calipers 6 Inch
By GlowGeek
7.6
Score
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9 TENGYES Electronic Digital Caliper Micrometer - Stainless Steel Vernier Calipers 6 inch/150 mm TENGYES Electronic Digital Caliper Micrometer - Stainless Steel Vernier Calipers 6 inch/150 mm
By TENGYES
7.5
Score
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10 Clockwise Tools DCLR-0805 Electronic Digital Caliper Inch/Metric/Fractions Conversion IP54 Protection 0-8 Inch/200 mm Clockwise Tools DCLR-0805 Electronic Digital Caliper Inch/Metric/Fractions Conversion IP54 Protection 0-8 Inch/200 mm
By Clockwise Tools
7.3
Score
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Caliper Calibration - How to Calibrate a Caliper

hello I'm Jim Salsbury with Mitutoyo America Corporation and welcome to theMetrology Training Lab.

in this episode we're going to talk about thecalibration of calipers in past episodes we've defined the concept of calibrationdiscussed the purpose of calibration and introduced important aspects of whatmakes a good calibration method in this episode we'll apply all those ideas tothe calibration method for a caliper calibration is a search for airs and wewant to develop a calibration method that efficiently hunts down and findsany potential errors in the measuring instruments so how do we best do thatfor a caliper well there's a nice American national standard for digitaldial and vernier calipers called ASME B89.

1.

14 andthe calibration method that we'll be discussing is based on that standardcalibration usually starts with checking out the proper operation of the caliperis there any obvious damage does it move smoothly do the buttons work correctlyand once you're satisfied with the operation then we begin the accuracytests on calipers the conditions of the measuring jaws over time is always aconcern for the external measuring faces before you begin measuring anything youbring the measuring faces close together but not touching and then look at thegap between them in front of a lightthis may look silly but it actually works the use of the light gap is anefficient way to see anywhere or bending of the jaws if you see somethingyou can then do a more thorough and quantitative test by using a gauge pinthis is done by simply moving the gauge pin from near the beam to the tips ofthe jaws while observing the readingshere all the values are zero so we know that the flatness and parallelism of thejaws are in good shape the use of a light gap is also good for checking thecondition of the internal measuring faces in particular when you have thecrossed knife edge type like we have on this caliper to check these internalmeasuring jaws you don't create a gap but instead you close the calipers andthen slightly rotate it and look at that gap at an angle to check the conditionof the measuring faces again you might think I look silly and looking at gapsof light might not feel too scientific but it has been proven over and over towork pretty well the very common caliper like this one here has four differenttypes of measurements it can make and therefore our calibration method needsto be properly engineered to sufficiently and most efficiently huntdown the potential errors as already mentioned this caliper can make bothoutside and inside measurements most calipers like this up to 12 inches alsohave some type of depth bar for making measurements into holes or slots thefourth type of measurement that's possible with this caliper is the stepmeasurement which uses these two phases to make measurements like this stepheight on this cylindrical workpiece this type of caliper is quite common sowe will discuss the necessary accuracy tests to calibrate this caliperthere are other configurations of calipers out there and after watchingthis episode you should be able to extend what we discuss to thecalibration of all types of calipers for all of our measurements we will want toproperly use the caliper the most important skill and calibrating calipersis simply using it correctly if you're having some struggles getting goodresults find yourself a caliper that's known to be in good conditiongrab some reference standards and practice it doesn't take too long to getthe right field the general principle of the calibration method which is based onthe requirements of the ASME be 89 114 standard is that all four measurementmethods outside-inside depth and step all use the same measuring scale inaddition the zero points is only set once based on the outside measuringfaces and so from all that the calibration method is to measuremultiple points across the measuring range using the outside measuring facesand then only a single test point with each of the other measuring faces nowlet's look at this method more carefully first we will clean all the measuringfaces and then bring the outside measuring faces together to set our zerowe will double-check our zero but when we're done with that we won't change itagain during the calibration the first test is with the outside measuring facesfor 6-inch caliper the ASME standard requires a minimum of three pointsacross the measuring range the minimum then increases for larger calipers wewill take four as that is convenient for the reference standard that we're usingwhich is this military caliper checker this is a nice standard for calibratingcalipers but you can use any grade or material gauge block as well well startat one inch in accordance to the ASME standard the length specifications applyat any point across the measuring faces thereby including any influence of thejaw parallelism during the calibration it's important to intentionally vary thedistance from the beam at different test points at the 1-inch points I'll startclose to the beam and report that value I'll also check it further out just tosee if the caliper may give me some problems when using or calibrating acaliper it's important to learn how to get a consistent value the amount offorce you apply can vary the results as you see here I am applying too muchforce and the values changed by several thousandths of an inch so don't do thatalignment is also a problem if you're misaligned in this direction you can seethe values get larger if you are misaligned in this direction again thevalues get largerso you want to rock the caliper in both directions while applying a consistentforce and looking for the smallest valueit looks like the air at this test point is minus 5/10 so I'll write that downit's understood that when using a caliper you need to rock it around a bitto get the proper result this applies to normal use as well as in calibrationit's not correct however to take a bunch of readings and report the averagevalues during the calibration the caliper should be repeating within thespecification limits for the length accuracy and if not and the calipershould be rejected it is also not correct to rock it around until you getthe value you like right this digital caliper has a resolution in inches of1/2 a foul or 5/10 in metric the resolution is 10 microns and if youdon't understand a thigh or 1/10 or microns go watch our episode of themetrology training lab but just discusses the units of measure for thissize digital caliper the tolerance is plus or minus one thousandths of an inchfor all the test points that we're taking including the outside insidedepth and step caliper specifications can be tricky to understand I recommendyou to review the technical Bolton we've put together on this topic you can findthat on our on-demand educational websites so let's continue with theother test points at 2 inches I'll measure about halfway down from the beamto the tip to the jaws after some rocking around the air looks to be minus5/10moving to four inchesthe air also looks to be minus five tenths at six inches I'm going tomeasure out near the tips of the jaws I need to be very careful here with myforceI'm applying too much force there and that feels better after a littlewiggling around once again the air looks to be minus five tenthsthis completes the testing of the outside measuring phases an alternativeto the caliper checker is to use gauge blocks that's fine but be careful youneed to measure them like this because you need to move across the jaws like weshowed with the caliper checker you can't measure them like this you want toensure your test method is sensitive to the parallelism of the jaws it'stempting to measure the gauge blocks across the entire measuring faces that'seasier or maybe to measure them only near the beam that's usually lessinfluenced by your force however it's not our job to calibrate the caliper andonly its easiest or best mode of use on the contrary we need to assess itsaccuracy across any reasonable and likely use now let's move to the insidemeasuring faces and we will use this caliper checker again if you don't havea caliper checker a ring gauge like this is a good solution as well as mentionedbefore you only need a single test points and the ASME standard states thesize to be somewhere between three quarters of an inch and two inches thetechnique for inside measuring faces is a little more difficult if you rock thisway the values get smaller again but if you rock this waythey get larger so you need to wiggle this waylooking for the smallest value all while applying a constant forceand then we go this way looking for the largest value looks like I'm gettingminus five tenthsthis caliper has crossed knife edge inside measuring faces they are sharpbut of course there is still some thickness to these edge faces andthere's some gap between the two edges it's pretty well known that if youmeasure a small inside diameter that you may measure undersized when using thecross knife edge measuring faces this is particularly a problem when there aresome damage to the faces so it's valuable to check this duringcalibration this is done by using a small ring gauge like this ceramicsetting ring the ASME standard specifies a point two inch diameter for this testlike we have here the measuring this ring gauge is pretty easy just apply agood consistent force and then wiggle it around a little bit looks like I'mmeasuring minus a thousandth of an inchfor the last two measurements in the calibration we'll use a gauge blockplaced on this surface plate for both the depth and step the ASME standardspecifies a single test point less than two inches so we'll use this one inchgauge block here metoya we like square blocks for the depthmeasurements for obvious reasons in this case I measure an air plus 5/10 so we'llwrite that down lastly we do the step measurements again a square gaze blockworks well we'll use the same one-inch gauge block we can hold the caliperagainst the block and simply take our reading looks like the air is minus athousandth of an inch so we'll write that downso this completes the calibration all the airs here are within the plus orminus one thousandth of an inch specification so it looks like thiscaliper is in tolerance and that's the calibration of calipersremember the method we just discussed comes from the American nationalstandard on calipers asme be eighty nine point one point fourteen lots of expertsfrom around the country helped write this documents but the b89 committee isalways looking for ideas to improve the standards minatoya America is heavilyinvolved with this committee and if you would like to post comments on thisstandard good or bad we gladly bring them to the committee's attention thestandards committees are also open to the public and you're welcome to attendthank you I'm Jim Salsbury and I'll see you next timefrom the metrology training lab.