So, in most drafting/modelling software, we have a feature called
Snap to Angle or
Snap to Edge; its function is to snap the control(cursor) to the nearest most obvious angle/edge to relieve strain on operator to carefully move the cursor to that exact point.
If you haven't seen it try
Right Click on Desktop >
Align Icons to Grid & then move the icons around.
Now on to my question:
When performing the maneuver Opposing Knife Edge it is crucial that the roll angle (w.r.t. level) should be very close to ±90°. Especially considering the high speed (& probably high G-Force) situations is a feature equivalent to CAD's
Snap-to-Angle employed in air-show modified jets?