This is the only digital gauge on test that beeps when switched on and again when a reading has been taken. Draper’s gauge offers a wide range of readings, including the more modern kpa, which is used on a number of European vehicles including our Vauxhall Insignia and the latest Mercedes-benzes. The chunky traditional watch-style batteries that power it are quite fiddly to extract with your finger, but straightforward to fit. The attachment that fits over the Shrader valve appears to be made from plastic and was quite awkward at times to correctly locate and obtain a reading. Plus, the angle at which the gauge needs to be positioned was sometimes difficult to apply. However, the resounding beep at least indicated that a reading had been taken and could then be read by removing the gauge from the valve. The gauge switches off automatically, but can also be switched off by holding down the ‘ON’ button. With no backlight or torch, it’s not particularly useful in low light, unless you have another source of illumination.