How accurate is this device? Has anyone tested it against a calibrated gauge?
454021
its very accurate. had it tested again the gauges at Sam's club tire dept as my son works there.
454022
Hi,Very accurate. It's the best one I have owned. Love the light in the device because it illuminates the numbers
609529
I've found it to be fairly accurate. I have an apex controller, and it's roughly a degree or so off.
1987768
If you keep it inside and don't subject it to temperature changes, it is very accurate. If you bring it in from a cold garage and start weighing bullets for an hour it will warm up and loose calibration.
730698
So far, I cannot get it calibrated. They are sending a new replacement meter.
222315
It is accurate. I tuned a guitar with it and then played that guitar with a keyboard track and it was perfect. sometimes it takes a little longer than i would like for it to respond but that's true of all the tuners i have used.
1189885
I didn't have any problem. However I sent mine back due to I didn't/don't think it gave me accurate readings.
1414487
The gauge is not accurate while the compressor is running. It is not totally accurate, even when it is not running. That is, not as accurate as a good quality dial gauge. I say this because I have several gauges, and all the round (dial) gauges read the same value,and the other ones (bar gauge, digital gauge, and the compressor's gauge) are off by a psi or two.Your best bet is to double check the compressor's gauge with a good quality dial gauge. It will be off by some constant, and once you know what that is, you can correct the compressor's reading by that.
1137305
No...this is a simple inexpensive gauge, not a precision instrument. I didn't get a chance to compare it to a reference gauge as mine quit working. Nice gauge for the price though (if it works) because of the lighted tip.
877973
I don't believe the machine can be calibrated, at least I haven't noticed an option. Also the readings are not always consistent if you take a few back to back. Have others noticed this?
956224
I don't calibrate the meter. It works right out of the box for humidity level. I do not use the ph meter or the light meter. May be you can stick in in vinegar and see if it reads about 3
903425
The only thing I have to compare it to is my only other air gauge and it is a very cheap one. So I can only assume that it is accurate.
402083
I cannot quantify the accuracy. There are several factors that can change a reading. I did spend time with a nurse, and found that her reading was fairly close to the reading from this device, but changing the position of the monitor can make the readings off my more or less. Funny thing is, even at the doctor's office, they take my pressure twice, and they are never the same.
2163879
It will measure current well under 5A DC. I've been told clamp on meters aren't very accurate and I think this is compounded at lower currents when the coil is influenced by other stray fields. When I went outside and did a little testing with my trickle charger (and leadtype multimeter in series) I found that it's quite accurate (within 10%) down to 0.5A but when I got to the 0.05A it was out by up to 75%. I think your results will vary depending on environment.
1722895
The probe is very accurate. I think the probe is unique to this unit, but any 2 wire probe should work with it. Don't forget the temp on this unit is only in Celsius.
123046
Accuracy is claimed to be a lot tighter than that. I bought three and the three are very consistent when each is used on the same tire. I don't know about NIST, nor have I checked them against any other standard. I bought them because my 2013 Ford Focus manual recommends digital or dial gauges rather than stick gauges for accuracy.
893591
Don't know - but I have a bunch of tire gauges and this one looks accurate based on my experience. Why don't you contact Joe.
1366658
I am sorry but I don't have a way to really test the accuracy, and I don't have anything to even use it in the reverse direction. Also, it would probably cost me more to get it calibrated than I paid for the wrench.