I've been restoring my grandfathers old motorcycle and when it came time to fit the new carburetors and balance them I was anxious. I nearly pulled the trigger on some simarly priced analogue gauges when I came across this gift from the heavens. Came in 2 days, everything was there, Australian made and worked BEAUTIFULLY. Once I figured out it auto calibrates (even the dampening?!) I was star struck. Within minutes I had both carbs within 10mmhg and they sung a glorious song. Couldn't be happier you legends.