Big Horn 19053C 3 Pieces 8-Inch Spring Caliper / Divider Set

Each of this set of 3 has been very useful in wood turning projects. Easy to set, with springs strong enough to stay where they’re put. Good tools and at a good price.

Very happy with these instruments, work very well and easy to use with one hand. Excellent quality and a good price

These calipers are great, for the price, but needed a bit of cleanup before use. They arrived covered in a heavy oil and in sealed plastic bags, to prevent rust from exposure to uncertain shipping and storage environmental conditions from their country of origin. The country of origin is not marked on the calipers or their primary packaging.They do not appear to be made of stainless steel, so I degreased them and then sprayed them with a "dry" lube -- similar to "Dri-Cote" or "Top-Cote". I use them for woodworking and do not want "wet" oil or grease to contaminate my workpieces or my tool chest.The pointed ends of the inside and outside calipers had substantial sharp burrs -- i.e., the tips were ground but not finished. So, I used a hand-stone to remove the burrs and concluded that these are made from a relatively soft mild carbon steel. The springs appear to be made of a harder grade of appropriately tempered spring steel, and the adjusting screws also appear to be made from a harder steel.With proper care and storage, these instruments should do a fine job for a long time, and are great for their price. I did not rate these at five stars due to the amount of cleanup and deburring that I had to do. If I did not already have a hand-stone, degreaser and dry-lube in my shop, I would have rated these at three stars.

I'm using mine while working with a wood lathe so the ends being a little sharp on the outside and inside calipers isn't ideal but that's nothing a little filing cant fix.They hold position well even with me pulling them out of my pocket and dropping them back in many times while working on stuff.Having owned these for a couple of years now I can say I've had no problems with rust except some tiny bits on the blackened parts. An that's with them stored in my apron pocket often filled with wood shavings from green wood so they get some fair moisture exposure. I see other reviews saying that theirs got a little rust so it can't be stainless but remember even stainless steel will rust if its exposed to overly rough environments or the surface gets too roughed up so your mileage may vary depending on what you are doing with them.Overall I'm very happy with them and might buy a second set so I can leave some set to more of my chuck sizes without having to re-dial them in.

Quality instruments that work as expected

Very important they worked very well with the spring system that they had, even though they did not give you a degree in measurement, you have to take a secondary measurement device and be able to subrogate the measurement to what you were looking for, the durability and accuracy was quite markable, but you do need a second measuring device to ensure that the degrees that you are looking for specially if you are doing machine work clean. Thank you, bert

These drift a bit and are a bit rough to use, but they do work, probably enough for most uses. I wish the ends were just a little smaller to fit into the milllwork figures I am recording with them, but that's how it goes sometimes. For the price, not a bad deal. If you want super precision, these are not for you.

These are the first "oldy style" calipers I've owned, having made do with fancy electronic ones cheaply made (but good - PCB printing is very accurate) ones until now. It's hard to measure the diameter of a deep impression with the electronic ones 😆Good quality. Nicely polished steel. Not "stainless steel", so they came coated in a thin layer of machine oil to protect from moisture, presumably. I believe stainless steel would have caused other issues over time so I think the choice here was the right one. The screw movement is a little rough until it's exercised a few times and now it feels like a precision instrument! Made in India!