Originally Posted by
KRviator
Since I had no idea about that, what is the reason for double-sided dipsticks?
It's so the same dipstick can be used in either engine. That way only one dipstick had to be manufactured for the aircraft.
It's all about the angle the engines are at when mounted on the wing as opposed to say the Aztec where the engines are mounted level.
Direction of rotation has nothing to do with it. If I remember correctly the Seneca is the same, that's the original Seneca not the Seneca II and above.