D. P. 5.0 out of 5 stars Accurate, but takes some getting used to – and now it has a wake up button. Reviewed in the United States on May 2, 2017. … Find one of your unused in-ear earbuds’ silicone/rubber heads, cut a thin piece off the inner tube. See photos. Place it inside the tube of this gauge. No need to glue it.
https://www.amazon.com/Accutire-MS-4021B-Digital-Pressure-Gauge/dp/B00080QHMM