By watching it rotate and counting
If earth surrounds itself it is known as rotation if earth surrounds the sun then it is known as revolution
Tire rotation, Engine rotation, Distributor rotation, there are several things that rotate, need to know which one.
Engine rotation is determined by sitting in the driver's seat. But engine rotation is of no consequence when determine firing order. It is the rotation of the rotor in the distributor that is important. That is easily found by removing the distributor cap and bumping the engine over and looking at the rotor. Does it rotate clockwise or counter clockwise?
rotation of the crankshaft
You will need a reverse rotation cam and lifters, reverse rotation front a rear main seals, reverse rotation distributor, and a reverse rotation starter.
The small block chevy turns in a clockwise rotation.
An engine PTO runs off the engine thus the speed is governed by the speed of the engine. A ground PTO is ran from the rotation of the tires. Therefore the speed is governed by the speed of the rotation of the tires.
Standing in front, looking at the engine, clockwise.
clockwise
clockwise
Clockwise as viewed from the front.
I think the answer is TORQUE CONVERTER !!