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I have probably 6 different tire pressure gauges. I have cheap stuff and some that supposedly are highly rated. I even have a relatively expensive one from large national high performance parts company. And I can use ANY one of them and get readings that vary up to 10 pounds of pressure! The expensive one reads LOW – like 8 pounds low! I got a cheap one with a a cheap AC Tool Kit (I think I got it from Walmart) and it works the best or at least it seems to. I want one that when it takes the pressure, it locks the reading in until I release it. I’ve tried digital gauges like Accutire and not impressed. The expensive one that reads low is Intercomp (it does not lock in pressure but even so it is not accurate). If you know of a good gauge for less than say $70, I want to know! And I’d like to know how you determined it was accurate.
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I got a analog gauge after my digital gauge died: Accu-Gage H60X. It uses a Bourdon tube, which is said to be quite accurate. The rated accuracy is +/- 1 psi at 30 psi, and the readings have been consistent with the TPMS values (not very scientific, but seems reasonable). It will hold the pressure reading until you open the valve, which can also be used to bleed excess air. I think it also has a glow-in-the-dark face too.
Not sure what you mean by lock in the reading. Both of these are analog and in 10-15yrs may need the spring replaced. But, no batteries or false readings due to low batteries, and also no leaky batteries from them being in there too long or it getting to hot or cold.
When you push it up against a valve stem it gives you the pressure reading. When you push the trigger to fill the tire or whatever with air the pressure gauge retracts. As soon as you let up it reads again. This is that Style. These tend to be pretty accurate but, are not perfect.
Matco A100A 10-120PSI INFLATOR GAUGE 2psi increments
Amflo 100D10-120PSI INFLATOR GAUGE 2psi incrementsIf you want one that stays at the psi after you take it off the stem. I suggest the pencil type. Sure it is analog and you have to push on the end of it normally against your leg to get it to go back in. It also does not have a way to fill and check at the same time but, you want accuracy they are normally extremely accurate unless you get the slide dirty. Then you clean it with a soft rag and some soapy water (Break clean will take the numbers off of it).
Snap-On PGPL150 Gauge, Tire Pressure, Pencil, 10 to 150 PS 2psi increments
Snap-On PGP120 Gauge, Tire Pressure, Pencil, 10 to 120 PSI 2psi increments (100 to 800 kPa) 10 kPa increments Yes, this has both psi and kpa on the same tool.
Digital is normally worse if you ask me in just about everything. It is going to take another 50-100yrs before it gets anywhere near the accuracy of a properly built and used analog tool.
I appreciate the comments. To clarify, expensive on I purchased only shows the pressure when on the valve stem (as in momentary while the air pressure is actually sending pressure to the gauge). But it is not accurate. I want one the locks in the highest level of pressure until I release it AND it needs to be accurate. Since I’m using it on cars, I prefer one that reads to maximum of 60 pounds. And almost all of the ones I have say they are accurate to within 2 pounds – but they are not. I’ll check into the gauges already recommended. I was wondering if anyone has done their own independent testing to see if the gauge they now use is accurate. Something I found interesting yesterday: I was checking the pressure on an older Miata and got 32 on three wheels and 30 on one (using the gauge I feel is the most accurate) – I figured that was a little low so I checked the sticker on the driver’s door and it said 26! I have not seen that low a number in years!
I am surprised that no one here has mentioned Dill or Ascot for pressure gauges, that is all we use at work. Dill is made in U.S.A.
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