DIY: Reading a Dial Vernier Caliper (Imperial)

hello viewers 40 i wires here back or everyone no no spective ready here we'll be doing a demonstration on how to use a die your caliper now what we'll be using for an example here is a socket to show the three different types of measurements at this unit is capable of now this particular unit is measured in imperial now to go over some of the basic parts of the caliper here first I'll be starting with the outside diameter jaws you can see on the front side here then we'll also have jaws in the backside which we use to measure the inside diameter of an object moving down to the bottom side of the unit here we also have a depth probe which can be used to measure the depth of an object then moving over here we have a lock here which is used to lock the slide back and forth so when you do take a measurement you can lock this in place and it doesn't move until you take the full reading down now this one doesn't have it equipped on it but normally they do have a lock on the dial as well so when you do this setting it doesn't move next moving on what we also have here is the thumb wheel which you use to slide this back and forth and we also have a scale on the bottom side here which is used to measure the 1 inch increments now this particular unit does go up to 6 inches now you can get them in a larger measurement as well I've seen them as high as 15 inches next the other measurement can also do here is the first decimal place which is the tenth and the dial indicator here is used to measure the hundredths and thousandths increments now as for maintaining your caliper besides always keeping the jaws clean before every time you use it now you always want to make sure you do handle this with delicacy don't drop it because that can affect the accuracy of it and damage the jaws as well and you can see in here there is a small gear and what this does is this operates the dial itself now you always want to make sure with any caliper is just add a little bit of lubricant oil to here and just to ensure that everything does work correctly don't want to add too much wear any debris if you're working around a lot of metal shavings and such where that's going to stick inside there as well if you do find that is sticking inside there you can go ahead and just use a little bit cleaner to spray that out and then apply some lubricant again now every time before you start using your burner you always want to make sure the jaws are clean now that applies to all the jaws whether it is the outside diameter inside diameter or the depth-gauge normally what can happen if you are working with some dirty parts the grime can build up and therefore affect the accuracy of your tool now normally what I recommend to clean that is either using just a piece of paper you can use a cloth you can even use a little degreaser on there just to clean the grime off we do find that it is baked on there now next moving on when the jobs are fully closed here just to show you you always want to make sure your unit is zeroed so as you can see this one here you can rotate this back and forth to ensure it is all the way now normally when you're closing the jaws here you always want to make sure you do ply somewhat of a medium pressure here when you're always doing the measurements always apply the same amount of pressure just to ensure all the measurements will be within accuracy now normally as I mentioned before besides this lock here you will have a lock down at the bottom as well unfortunately this one isn't equipped with it normally what you do is you lock the outside ring so it does not move when you are opening or closing the vernier now next moving on to the larger scale here so on the larger scale here the larger numbers which we will have with the larger lines will be the one-inch mark so as you can see here we start from zero and then we move up to one inch so on and so forth until we go all the way up to whatever the maximum measurement your Vernie will do in this case this is a six-inch vernier next moving on we'll have the smaller lines in here now this what this measures is the first decimal place or the tenth so we have 1/10 2/10 3/10 4/10 so on and so forth until we go all the way up to one inch and then start over again now what determines or what spot we are is this little spot right here this little metal tab as you can see here we already are past the 1 inch line and to move on we already passed the 1/10 line and you can also see this on the gauge as well because every time the needle goes past zero we move a whole tenth or first decimal place now beyond the tenth decimal place we also have the dial indicator here now what this covers is the hundreds and thousands decimal places so as you can see here we move all the way around this needle and it goes a full hundredth so first year well we'll start by doing is looking at so we go all the way we'll have zero at the top side here the needle has moved past that all the way past 10 so 10 will be the hundredth decimal place and then we go past a another couple lines here which include the thousands which is the final measurement so basically what we're looking for at a measurement here is one inch point one 1/4 so just to go over that again here now with the one inch and first decimal place we have the scale that takes care of that measurement now as for the hundreds and thousands decimal place we have the dial indicator to take care of that measurement now taking our first measurement here as you can see I've already zeroed it and I've made sure the jaw is already clean so using this thumb wheel here now if you are using this you always want to make sure that the lock on the back side is loose because you will find it does open or close hards you always want to make sure that it is loose and that is not tightened down just yet so we'll do first as we'll open it up then using the socket as an example here we'll do a put on the outside jaws here now we want to make sure there's a medium pressure here I wouldn't apply it too light because you want to make sure it is on the object we also wanted to be too hard on it where it's going to not move freely here in the jaws so what we'll do there is take the measurement come around to the top side here and lock the jaw into place careful not to move the caliper there pop that out and then take the reading now as you can see what this measurement here with the reference to where the jaw is located on the scale you can see it just passed the 6/10 mark now we're still under one inch you can see hopefully you're able to see on the camera here might be just slightly hidden in behind the dial indicator portion here but we're still under one inch anyway moving on then when we look at the scale on the dial indicator itself we can see we're past 60 so that will give us 600 of an inch so far so so far we're left with 0.66 and then moving on to the final number here when I said was past 60 anyone all the way up to 67 which the seventh is the thousandth number so we're left with a final number here of 0.667 thousandth of an inch so next moving on you want to make sure this lock has been free so you can close the jaws back up and it doesn't put any drag on the unit you want to make sure these jaws are clean so it doesn't affect the accuracy then we can go ahead and zero the dial next moving on will also be cleaning these jaws as well to make sure they are clean because we are doing and inside dimension so first what we'll start by doing here is opening the jaws up we'll take the inside measurement the backside the socket here moving the socket back and forth to ensure that there is medium pressure and that we do have a good surface that we can take the measurement from what we'll do here then is lock it back up again move the part and we can then take a measurement so again taking reference with the edge of the jaw here as you can see we've passed the two tenths mark so we're still under one inch and moving on to the dial indicator here we can see the needle has gone around here to 54 so what that will give us a final measurement of 0.25 4 thousandths of an inch now again moving on to the final measurement here now we've already used the outside diameter inside diameter and now we'll be doing depth so this is a little awkward to show on the camera here but what you want to do here slowly slide it open ensuring that the caliper was zeroed before you do use it you see the probe does come out all the way now the probe does extend out the full length is what the caliper is recommended for you can see what we do is we'll slide it out just a little bit more we'll push it back in there as you can see and we will move it around applying again medium pressure using your thumb is to ensure that it is on a true surface therefore the measurement and then we'll continue to go ahead and lock the unit into place and then we contend take a measurement from here with this measurement here as you can see we are still under the one inch mark as you can see just based by the zero here we haven't come past the one inch mark line which would be somewhere around this location just underneath the dial indicator portion and the edge of the jaw here has passed the three marks so so far we've achieved a number of zero point three now moving on to the dial indicator portion here you can see the needle has gone around past the halfway point on the dial indicator here going all the way just before 60 so we ended up with 59 so which gives us a final number of zero point three five nine thousandths of an inch so this concludes the rest of my tutorial video do you have any comments or questions please don't hesitate to post them below also please don't forget to subscribe to my channel and like my video thank you for watching

Channel: 4DIYers

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Keywords: 4DIYers, tutorial, how, help, diy, guide, vernier, caliper, dial, indicator, imperial, standard, Standard American English, SAE, s.a.e., american, english, scale, measure, machinist, accurate, zero, set, depth, bore, diameter, dimension, dim, analog, easy, teach, simple, tool, measuring, socket, clean, lock, retainer, jaw, jaws, inside, outside, outer, inner, main, fraction, mechanic, mechanical, lathe, milling, machine, metal, forestry, woodworking, wood, working, science, med, medicine, medical, engineer, Starrett, school, university, college

Id: VcOMLpjDa9c

Length: 10min 10sec (610 seconds)

Published: Fri Aug 01 2014