ever seen one of these

[nelson edens]

came off of a 13 foot checkmate with a 140 inline

must be 'early high performance' goes around 1-1/2 times

[Dave Strong]

Never seen one, kinda cool.

Dave

[FUJIMO]

Common in the late 50's thru the mid to late 60's. AirGuide and Aqua Meter were the most common brands. That surface mount, air pressure gauge turned speedo,(which is what all pitot speedo's are) was originally all chrome. Someone over time has painted it. Hope this helps.