like to thank everybody for your comments for your emails and we're going to try to post everything that you send us and we're going to try to answer now forgive us if we don't get an opportunity to answer everybody's but thank you for sending them we really are going to try to do that suggestions love to hear it comments love to hear it please send us your comments last video we did we talked about telescoping gauges and ball gauges well there's other ways to measure inside diameters and this is one that has been around for a lot of years and that's inside mics which I'm not a particularly big fan of but they work okay by the time you change the mics for different ends for different sizes you almost have to reset the mic all the time and that's kind of a pain but if it's up if it's the only tool you have you make it work so how do we check the inside again this this takes a little bit of delicacy this is that art form the little bit of a feel that you have to have the way I like to do it is I like to go inside like so I don't know if you can see that on the other camera there but I'll try to get my fingers out of the way here and move it back and forth and up and down right left up down right left and keep unscrewing it keep trying to open it so idea we're going to move it up and down right and left until we get it just where we want it and it should be able to stand on its own all by itself if we get it right so takes a little bit of finagling because you don't want to get a false reading which you can do and that's again is where this kind of with this art form comes in it we talk about all the time so right there is about where I think is one inch and 750,000 switch is what this ring gauge is well the mics are off just a bit it's of off about two-tenths here up and you can adjust them there isn't a judge right here putting a spanner wrench in there and you can move the main barrel and align it with the hash marks here so that's one way to do it if that's all the equipment you have and that's a good way to do it but I've never been a big proponent of inside mics frankly now here you go haha this is a baby but you got ever engage you have to have a fairly expensive piece of equipment and dropping that guy in my eye let's see Jim can you get a good shot of that over here that's pretty easy what do we got one inch 750 so there you go one inch 750 you're all set go to your part that you're checking stick that baby in there let the handle go and out it'll come to one in 750 pretty easy but again expensive piece of equipment and if you don't have it for a couple hundred bucks you can get inside mics and you can do the same thing this particular set will go all the way up to 12 inches so you can take change the ends out put a different end on it and by doing that you can extend it so it gives you every possible combination from one and a half inches all the way up to 12 inches just by changing the ends and again sometimes you have to fool with the adjustment here on the end to get it just right or maybe with the barrel here and another way to check this just to make sure is to check it with a set of mics if you've got mics but if not there you go you check it check it by adjusting the ends and setting it to a master if you happen to have one so that's a story for inside mics any comments or questions love to hear them thanks for watching Oh