PRO BIKE TOOL Tire Pressure Gauge, Low or High Pressure Versions, Accurate Inflation for Safe & Enjoyable Rides, Great for Road, Electric, Touring & Hybrid Tires

Initial review: I bought this after not having a way to check my tire pressure on the road after changing a flat, inadvertantly overinflating my tire and suffering a sidewall blowout a few miles from home - not fun at all! So I just received this and tried it out on a spare wheelset in the garage (last place you want to try any new product out for the first time is while you're changing a flat on a rainy day!). Product feels well manufactured sturdy. It is lightweight enough to go into a jersey pocket and forgetting it is there as well as being small enough to fit into even my tiniest saddle bag with a spare tube, CO2 canister, two levers and a multi-tool. It works well with Presta valves and the pressure readings are accurate enough to get you where you need to be after changing a flat in 10 PSI increments. Any finer increments and you'll have to guesstimate it. The release valve works better than expected to help you dial your pressure into an acceptable range. As long as you follow the instructions that came with the product and in the email from the company I received on the day the product was delivered (nice touch, btw), you shouldn't have any problems with loss of air when using the product in the real world. Time will tell if this product continues to work as advertised, but as of now I am pleased with the product and won't go on a ride without it.

Listen up engineers, this item is a good example of verification vs. validation. Passed verification, failed validation. It is made of high quality materials, and I imagine it will measure pressures in some given range, it just does a horrible job of what its supposed to do. The gauge pops back in as soon as you take it off the valve. I was expecting it to work the way all other pen style tire gauges work so you don't has to stay stooped down/bent over trying to read the gauge. But worst of all, it lets out a lot of air as you engage the valve. Not a quick "pssst!", more like "fshsssssssssssssssssst!". Now you've lost 10 PSI that you have to guesstimate for when you put air back in your bike. Returned.

My one complaint is that you have to screw the gauge onto the valve to get a reading. One side of the stem has psi and the other bar. Since the gauge must be rather tight to get a reading, it makes it a little difficult to see the numbers on the gauge. Especially if you're trying to measure one of them specifically. The gauge also resets as soon as it is removed from the valve.I do like that the gauge appears to be well made. I also like the button that lets you easily release air from the tire while still giving you a pressure reading.

Well made; feels solid. The pop-out gauge is quite short, and therefore cannot very precise--a couple of pounds of pressure does not visually change the bar position significantly. There also appears to be enough friction that the pop-out gauge does not always accurately reflect the new pressure after bleeding off some air. On top of that, the markings are just tiny--hard for middle-aged eyes to read.The schroeder valve attachment works really well--the connection to the valve screws on and seals before any air is released, meaning almost no air is lost in the process. The presta attachment works "fine"--it just presses on--but it loses a little air as you fiddle with positioning the gauge. Unfortunately, for me, I'm more interested in the presta attachment.The difficulty in reading the gauge, the friction of the pop-out piece, and the air loss means it's easy to overshoot the mark when dropping pressure. I have since bought a mini pump from Pro Bike Tool that has a built-in gauge--I'm hoping it will end up being a better alternative. This little guy just doesn't quite cut it for me.

There is not much to say. It works and is small enough to fit in my saddle bag. I do a lot of long distance touring and would not want to ride hundreds of miles on improperly inflated tires. I can always check my pressure before i leave with my floor pump, but on the road if I get a flat, I just estimate when reinflating with CO2 or hand pump. Now I can have a much better idea of inflation and for minimal weight and size. Cool product and exactly what I was looking for.

I can't believe how many different tire gauge choices there are out there. I had hopes this would be "the one" because of its compact size, its ability to read up to 120psi, and not requiring a battery, but I was disappointed.This is solidly built, but poorly designed. It is difficult to attach to the valve stem without losing some air, and I HATE that the reading snaps back to 0 after you remove it. It can be awkward having to get closer in order to read it while still on the valve stem. Also, the short throw of the pop-out piece makes the pressure reading be too vague. I should have looked at the picture closer - it's about an 1/8" increment that measures each 20 lbs. of pressure - much too small, especially given the overall length of the gauge. I see no reason that the pop-out piece couldn't be physically twice as long. As a result, there's probably at least a 10% margin of error, which is not acceptable to me.Finally, the air release button is worthless. It potentially can do more harm than good by releasing some air accidentally by pressing it while thinking it's a reset button. It's easy enough to release air manually on either a Presta or Schrader valve without having to attach any type of tool.I returned it, and bought a Planet Bike Dial Gauge Analog Bicycle Tire Gauge, which is superior in every category (and costs less!) except it is a tiny bit bulkier and heavier than this Pro Bike Tool gauge.On a positive note, I also bought a Mini Bike Pump by Pro Bike Tool and have found that to be a well made, compact item to stash in my saddle bag.

Love that it is small and compact. Easily switches between value types in seconds. Durable quality. Not the easiest to read lower pressures, but works well for my purposes