Lezyne Pen Gauge $22.00
One of the torments of using mini-pump at the side of the road or trail is the absence of a pressure gauge. Lezyne designed their Pen Gauge as an accessory to give you pressure readings while using one of their mini-pumps.
The in-line gauge is at the pump end of a flexible hose, similar to the hoses you find on other Lezyne pumps. It measures 195mm in length. At this size, you use it as a replacement to the stock hoses found on Medium and Large hand pumps, both for mountain and road applications. It's too long to fit inside the piston on their Small pumps.
The valve end of the Lezyne Pen Gauge hose has Lezyne's Flip-Thread chuck, meaning it screws on to both Presta and Schrader valves. The Pen Gauge does not have the ABS bleed button. Maximum pressure reading is 120psi.