Top notch boost/emp gauges

[HDi--Power]

Was on the hunt for a good 52mm emp gauge and found a little US company called Hewitt industries that makes amazing gauges for trains/ airplanes. They are accurate throughout their entire rev range to 1% and guaranteed for 3 years. Here is the boost and emp combined(yes two gauges in one) gauge I just got, two needles on one gauge They do gauges up to 100 psi or down to 30 with dual needles and seem to include some nice fitting gear, also do pyrometers etc.

They have no actual online shop though, they only way to get one is to contact them directly and if you ask nicely they will sell you one. cost me 200 dollars for this one including 2 day shipping from America and customs charges paid so not bad prices either and you can choose background, illumination, bezel, needles colours.