HFS (R) Pin Gauge Set, 190-Piece Minus Pin Gage Set M1(-), 0.061-0.250 Inch, 0.001 Inch Increments

Great set of go no go gages!

I am just a hobby machinist and these are exactly what i was looking for. Very nice quality for the price and everyone I checked with a micrometer was spot on.

Awsome gauges very accurate to the tenths and very reasonably priced

pin gauge . well wrap . good price . on time delivery.

I purchased this for checking a pistol barrel for its ID, but this is a great set for general gunsmithing. Firearms are full of small diameter holes. The only way to properly measure them is with a pin gauge. If you need to check clearances larger than a feeler gauge, but a scale won't fit, you can use the pin gauge on its side for a clearance measurement. It is most likely a tool not often used, but the sets low cost makes it a worthwhile tool to have on hand when needed.

Having a set of pins gauges like this makes it much easier to measure gaps or separation between two surfaces. The pins are of high quality and accurate enough to run up and down the scale until a match is found. Just be sure to try one pin at a time and replace before getting another pin. There is no easy way to tell them apart. On the bigger ones, there is room to scratch their diameter on the end of the pin.

These work great for measuring jet sizes in my Rochester HV carburetors on my Corvairs.

I used these as my measurement standards when reviewing 2 sets of Bolight digital calipers from here on Amazon (Excellent Calipers. See my review for more information). These pins will be used for general shop work where .001 accuracy is my end goal. Based on my test measurements with the new calipers mentioned above, an existing set of igaging absolute origin calipers, a 1" digital micrometer, and a 1" mechanical micrometer...these things are dead on when measured to .001 inch. I could occasionally get a +/- of .0005 across my results, but more often read perfect to 4 decimals or better with my digital micrometer. Note: These items are temperature sensitive, and after setting outside my door read consistently .001 under for every pin. After setting in a warm house with the lid open for a couple of hours, all measurements were as near to perfect as I could ask for. In the event that you are still developing an eye for small measurements, you will have likely seen the one-thousandth of an inch or "one-thou" for short (.001) phrase tossed around a lot. Until I held a piece of .001 feeler gauge, I didn't really have an appreciation to how small that really is. A post-it note is .004". Human hair is as small as .002. So...if you can settle to be accurate to the size of 1/2 of the thickness of fine baby hair, then these pins will work for you. There are sets out there that may be more accurate, but most people honestly don't work within those tolerances. Those that do are skilled to a level that I will not reach and my hats off to them. Save your money on these, and you get to buy more tools. In closing, I did buy these pins...none of that free stuff for a review here.

I use these a lot and they real good and actuate

Good quality, nice case!

A handy range of pin gauges for checking hole sizes.They're actually different sizes as well, unlike some other cheap ones.Serves my purpose well and helps identify different Jetting sizes

Good quality

Après avoir pris le temps des mesurer elle sont dans une tolérance de .0002 pouces