You are using your calipers wrong! Let me explain why...

today i'm gonna teach you how to use calipers i know a lot of you think you know these calipers but you'd be surprised there's actually four ways that you can measure with calipers and most of you only know about three ways so today i'm going to show you the fourth way which is extremely useful so before we get started though i have created a patreon account youtube doesn't really like me posting anything about reloading anything about uh you know gunsmithing reloading uh shooting any of that stuff they really don't like so um i don't want to risk having my channel taken down so i'm gonna go ahead and start posting all the stuff over on patreon and hopefully some of you guys can go over there and support me over there another thing that i said on the latest video one of the latest videos that i made was that uh about getting quarter moa groups consistently i was talking about f-class okay for prs or hunting or all that uh half moe groups it's is a good load and it's not very hard to achieve you know once we follow the simple steps that i'm going to teach you so anyway i just had to clear that up because a lot of you actually thought you know quarter mi gun and pretty much hunting and all applications now don't get me wrong you can get there but it's really not needed so anyway calipers so as i was saying there's four ways that you can measure with calipers okay so right now they're closed they're zeroed out okay everybody knows obviously about the od right that's how you measure od right there and then you can measure id like this right and if you need to measure the inside depth obviously we use a little tail on the end like this right but what about if you need to measure this step right here what do you do this is where everybody has a problem and they use that this is where they use these calipers incorrectly what do they do they usually try to do this right and measure however that is not very accurate because if you tilt these calipers like this all of a sudden your measurement is not correct so this is where the fourth feature comes in handy okay if you look at the back of the jaws right here the back of the caliper okay these jaws when they come together they're perfectly flush they're both zero if you do that they're at zero okay but as i start to open them you will see this jaw right here start to move away from this one and if you look at it right here it creates a step that's there so that you can measure these steps right here okay super easy so to recap you have od you have id you have depth id like this then you have depth od like this see that very very simple this fourth one is the one that most people don't know about and i use it all the time i mean there's always a step that you need to measure it's really that simple another thing before we jump off let's talk about calipers calipers are not very accurate okay there is resolution and then there's accuracy they're totally different things if you go look at these these are the mitutoyo ip67 coolant proof this is a fairly expensive set of calipers but even these are not super accurate okay back to uh the resolution so the resolution on these calipers is point zero zero zero five that's half of one thousandth resolution that's the display that that just tells you what the display is okay the accuracy on these calipers is plus or minus one thousandth of an inch so these calipers are only accurate to two to one thousandths of an inch okay obviously if you get a good feel for them you can get it you know within a thousand but the manufacturer does not claim that they're even good enough for 1 000 measurements so you have to be aware of that okay i see a lot of you posting uh you know measurements like base to ogive or you know just whatever measurements and you guys are using that that last five that half of 1000 measurement that means nothing it absolutely means nothing because that is way outside the accuracy of these calipers that number may as well not even be there it really means nothing so be very careful with measuring with calipers and of course then you you know you stack your your comparators and all that stuff and you're just stacking a lot of tolerances because everything that you put on here has a tolerance and you know you'd be lucky if you get within 1 000 accuracy so anyway just want you guys to know that um another thing that you need to know is especially if you have more than one sets of calipers i mean i have you know i have these and i have these you know these are all the same and then i have another set over here sorry about that so i have another set over here so i have three this one i have set up for a shoulder bump this one's for bass to ogive and then these right here are kind of just like my my uh everyday whatever i needed you know measure these are my my other sets of calipers and uh as i was saying it's very hard to go from one to the next to the next because a lot of times these because of the accuracy you can be measuring the exact same part with all three of these calipers and they may get a different dimension so again be extremely careful if you want to verify how close they are to each other sorry i lost my light earlier but as i was saying if you really want to verify how close these are to each other you can get what's called a gauge block okay so a gauge block is a certified pretty much a gauge that is exactly one inch or whatever size you get it i got one that's one inch and this is what it looks like okay make sure you don't drop it or anything but this is certified to be one inch so you can use this gauge what you do is you clean your calipers really good let me close them and sear them out all right so you take your calipers ah again don't drop it right there see that's exactly one inch so these calipers are good to go and i would just do that to all the other calipers and make sure that they're all reading correctly okay because you never know so make sure it's these gauge blocks are fairly cheap they're about 30 bucks i will put a link in the description below as well so that you guys can go and get you a gauge block if you desire so that you can have it around and for example if you're measuring like i was saying let's say you have calipers and a micrometer you take the caliper and the micrometer measure everything with the one one inch that's why i got a one inch because i have micrometers that are zero to one inch and then one to two inch so then i can use the same gauge block to make sure that they're all good that's all i got on the subject and i will see you guys next time again go to patreon support me i hope all your groups are one hole see ya

Channel: Erik Cortina - Pro Shooter

Views: 317,173

Rating: 4.874362 out of 5

Keywords: Erik Cortina, Cortina, EC Tuner, EC Precision, Precision, Accuracy, Long Range, Sniper, calipers, gauge block, mitutoyo, how to, calibers, 0-6, calipers, measuring, depth

Id: QlG6Qx5gmGM

Length: 8min 41sec (521 seconds)

Published: Fri Aug 28 2020

Reddit Comments

[u/firefly416]

Super clickbait title. Was expecting my mind to be blown, but instead only confirmed I have been using them right all along.

[u/GFZDW]

Didn't know about that last technique there. Thanks for posting.