CZC AUTODigital Tire Pressure Gauge, 4 Settings Mini Pressure Checker to 100 PSI (7 Bar), Backlight LCD Display & Pencil Style Tool for Auto Car Bike Motorcycle, Black

Easy to store in my swing arm bag.Accurate.

I’ll give it a four-star is a pretty decent pressure gauge sometimes you gotta play with it.

So far so good very ood gauge

UPDATE: Company got in touch with me andoffered a couple different options, I chose a replacement and it works perfectly. Updating my review to 5 stars.PRIOR REVIEW:This works, but the button broke the first time using it. Pressed it and it fell inside the unit. Took a while to take it apart, reposition the button, and put it back together. Next button press, it fell inside again. Took it apart again, discarded the button, and now just use a key or pencil to turn on. It works, just not as intended.

Used it when I received it to fill up my tires. A little over a month after I first used it, went and checked the pressure on my tires and this item didn’t work anymore, checked batteries with a digital multimeter for proper dc charge but batteries are good. Was a few days after the 30 day warranty so I couldn’t return it.

This is a review of "CZC AUTO Digital Tire Pressure Gauge, 4 Ranges Mini Pressure Checker to 100 PSI (7 Bar), Backlight LCD Display & Pencil Style Tool for Auto Car Bike Motorcycle, Black," a small digital tire pressure gauge.The package states "Power: LR44 button battery," but the description on Amazon's web page is correct, i.e., there are two of those batteries. Accessing them is not described anywhere, but I've done this, just out of curiosity: it requires a tiny Phillips head screwdriver, and if you have that it's not difficult.The web-page description is correct in stating "4 units"; the package incorrectly states that there are only two unit, BAR and PSI. Nicely, the reading is held for a few seconds, and you can switch among the values with presses of the sole button, before or after the readings. There is an auto-off function (which is quicker than the 90-seconds part described on the package as "30 or 90 seconds after use").The resolution of the unit is not stated anywhere. Another reviewer, "MW," stated, "Measures in .5 lb increments, spot on with my vehicle's TPMS readings." I have no reason to doubt this, as my testing hasn't revealed resolutions other than .0 or .5. It would have been nice to know this in advance -- as opposed to assuming, for instance, that it would read in tenths of a PSI, as many digital gauges do.The accuracy is not stated on the packaging or on the web page here. I did a test using a large car tire (255 50R19), to minimize reading changes with minor air loss when checking. The gauge was always within about a half PSI of my KTI 89001 pass-through compressor gauge (https://www.amazon.com/K-Tool-International-KTI-89001-Digital-Inflator/dp/B00CG674GY).That latter gauge has a specified accuracy of "±1% + 0.5psi at 100psi," i.e., a maximum discrepancy of 0.8 - 0.9 PSI at 30 - 40 PSI, the typical range for car tires; it is always within 1 PSI of the TPMS sensor readings on my car or motorcycle. I also ran some tests with the CZC vs. the KTI on a smaller motorcycle tire, and got similar readings (again, in the mid-30s range of PSI).So this CZC seems pretty accurate to me, within its resolution limitation. It also was spot on in repeatability testing, which is another help in checking accuracy.The angled chuck aids in positioning the unit, as does the gauge's small size (a little more than 4" long). This lets you fit it in between the spoke-like areas of some rims that would preclude using larger gauges (unless they, too, have nicely angled chucks).The chuck could be a touch deeper, however, to help you make sure that you have it positioned fairly precisely in terms of aligning it with the valve stem. If you don't align it precisely, you will get some air released because you're not making a proper seal. (And there's also a nub on the back side, to let you easily release air, if need be.)On balance, this is a nicely compact gauge, easily kept in a glovebox or on a motorcycle. And it seems accurate. I dropped the rating down two stars from perfection because:- There is no mention of what appears to be a 0.5 PSI resolution.- There is no mention of any accuracy specification.- Placement of the chuck is a little finicky.- The documentation of the package is incorrect in several ways.- There's not one of those pull-off paper tags to preserve battery life before the product is shipped.

The gauge is small, comes on with one push of the button, and has a digital display that is very readable. To turn off just hold down the button for a few seconds. Only has the one button, just push repeatedly until you see psi or whatever setting you use come up on the dial. Uses a common size button cell battery. This gauge makes it easy to keep our tires perfectly inflated, which of course saves fuel and unnecessary tire wear. Would purchase again.

Small size allows easy storage on my Vespa scooter. Also the head easily fits between narrow spokes to reach valve stem. Larger readout digits assist in easy readability.

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