Like rotors, the hinge block needs numbering along the side to indicate angles.
The hinges do have indicators to show which direction is negative or positive. Large block has a single line "-" marker detail and small block has a double line "=" marker.
No it doesn't have numbers like the rotors but you don't really need that as much with hinges since they only go 90 degrees in either direction. Knowing the direction of rotation is far more important than the actual degree number as you will usually know your degree settings anyway. I don't know anyone that uses the numbers on a rotor to actually decide what to set in the settings besides direction.
Just my opinion, FWIW.
They are useful to quickly spot at a glance in which section the current rotational position the rotor sits, especially for situations where one wants to set or adjust limits. (If only the angle pointer was a little more visible than just being a line on the shaft buried within the stator section …)
On a hinge, markings may have more limited value since you can see it from the side and roughly guess the deflection angle, but it's not like anyone is asking for markings in 1-degree steps.
A little usability goes a long way.
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