I have several other Jaco inflator instruments so I had no problem trying this one. The sensor is well made as expected and the readings are the same as my other sensors. The front panel button is used to turn on and change settings. The brass button is used to release air to achieve the desired pressure. The display has a blue glow for night vision. The rubber coating is good for protection. One of the best features are the end swivels. You can position the meter at any angle, making this meter a worthy contender if you're looking for one. Thank you for taking the time to read my review and photos of this product. I hope this was helpful in giving you more information.