The pitot tube is used on Piper aircraft. I love the one installed on my RV-6 for the past almost 26-years / 3,500+ flying hours.
When I built my airplane, they could be picked up used for $20 to $40. IIRC, I traded something that was worth $20 for the one installed on my airplane.
The nice thing about the Piper pitot / static tube on RVs is that they do not get bent out of position at air shows with builders looking your airplane over.
At 100 KIAS and above, they are as accurate as any other pitot tube on RVs. Below 100 KIAS, they tend to read on the low side. My RV-6 stalls full flaps at 38 KIAS. Typically my calibrated air speed is off as much as 8 knots below 100 KIAS. Above 100 KIAS, my RV typically is within 1 or 2 knots of other RVs I have flown with.
DO NOT fly the airplane with the tie down ring installed on the same side as the pitot / static tube as the disturbance in the air will cause the air speed to read even lower.
It is possible to replace the heating element or to add a heating element to the Piper blade type pitot / static tube.