Anytime Tools 4 Points Dial/Digital Caliper Attachment Accessory Extension Set for Deep Measuring

These attachments make any set of calipers so much more useful. It's just amazing.

It’s not like I use them everyday, but these attachments come in handy ever now and again to measure some engineer’s whacky dimensions on a print. I made a couple of threaded pieces to convert my calipers to centering calipers and that’s handy too.

precision hole drill and tap

Items is use good

Item As described, this accesory help us to make measurements further from the normal use of the caliper. It helps you specialy in hole measurements where you have to take the value in the middle of fitting sockets which is normally required by most standards.Ideal for my job of plastic products designer. The cons is that you have to assure that is well assembled with the caliper, so be careful in order to get ideal measurements. Or have an aditional caliper and have it mounted permanently as I do.....

These little things are awesome! I am using the ball nose contact points to measure the wall thickness of hollow forms on lathe projects, and they are great!. I wish they had a little deeper reach, but they are still great! With them mounted on Harbor Freight's $10 digital caliper they can repeat to .05" at the very worst I've seen, which is amazing to me! It took some doing to get the contact points lined up perfect, so if you are gonna buy this I would dedicate a cheap caliper (I would recorded a digital so you can zero it out) to the life long purpose of use with these.

I purchased these to be able to measure groove diameters and such. They work for that purpose, but the fit and finish is pretty poor. I had to lightly file a few burrs off of them to be able to fit them over the jaws on my Mitutoyo calipers. They are obviously mass produced with little regard for finish. All in all, they got the intended job done at an unbeatable price.

Very good technical parts. Still learning their benefit.Hole centering parts are limited in hole size.