hey what's up welders welcome to another episode of adventures in welding today we're gonna have something a little different again hang on to your shoes or one hand held for a second I purchased this lovely set of Chinese micrometres and I posted a picture on Facebook and one of our readers Deon asked me to do a quick video on how to read micrometers so that's what we're gonna do today so first let me tell you about this set this is a 0 to 1 1 to 2 2 to 3 and 3 to 4 inch micrometer set now I know that might look like a big old heavy instrument but it's not that big and the brand of these micrometers is get chewed and ran I know they're not starett's but frankly I can't afford starett so we're going with the Chinese micrometer 's for today alright let's talk about what you would use a micrometer for and that is to read for instance the diameter on something now this is a piece of a 513 type v drawn over mandrel mild steel tube and you can see it says the diameter is 0.5 or five hundred thousandths or 1/2 of an inch but is it really let's grab our 0 to 1 inch micrometer and find out so first thing we're going to do is open this up to at least a half an inch don't worry I'm going to show you how to read it after this quick little demonstration all right that's at least a half an inch you can see how it slips easily over that now what I'm gonna do is simply tighten it down this is little ratchet stop you want to use that to make sure the pressure is always equalized once you hear it click you know you're right I'm just going to lock it so we don't lose our measurement and you can see how this slips over the tube but it catches that means we're right on so is this actually a half inch it is five hundred and three thousandths so it is three thousandths over the half-inch mark now how do we know that all right let's see if we can zoom in here some more all right so here on this scale right here we have 0 10,000 20,000 30,000 40,000 50,000 now each one of these little marks I'm sorry zero hundred two hundred three hundred four hundred five so this is 50 and each of these little tiny marks is 25 thousandths so when we come over here you can see we've made it to the five hundred thousand smart and we have passed the zero the zero has come down beyond this line which we would consider our pointer line and from there we are at one two zero zero line three five hundred and three thousandths so let's try measuring something a little larger randomly grab this little plastic part this is off the number 26 ticket torch and we're gonna give it a measure so for this I'm grabbing the one to two inch micrometer now the way that we're going to read this is okay when this thing is all the way closed we have one inch in here now you can get these calibrated and they come with standards so that you can calibrate them yourself so since this is a one to two inch we have one inch there so we're going to add one inch to our reading and that's how we'll we'll take our measurement I'm opening up the micrometer then we just click see how it catches you can feel that lock it and we will read all right we are have 300 and we're not down past the zero zero is right on the line we're gonna call that one inch three hundred thousands okay now actually another trick for reading the inside of an object what we got here is a set of snap gauges or what are called telescoping gauges they are all different graduated sizes this one we're gonna use here the number C or letter C is three quarter to one and a quarter-inch get a good look at that and you can see see how their spring actuated so we're going to take our object that we want to read and we're going to place that inside there like that and see how it it opens itself up then we're just going to twist this lock right here bring it out now it holds that measurement alright and what you do is you bring in your caliper and you can read your measurement spring get you in here tighter all right so we have one inch already so that bore that inner diameter is one inch 25:50 plus one inch plus 50 plus 17 one inch sixty seven thousands and guys that is it that's how simple it is to use a micrometer it's an additive process if you're using the 0 to 1 inch whatever it reads is exactly how it's going to read if you're using a 1 to 2 inch you've add 1 inch and start there and these things go up to huge huge sizes but thanks for watching thanks for writing in get the hell out of my shop