Worth a note is how in aeronautics the western countries and the USSR developed an artificial horizon with completely different display (direct vs. indirect):

Worth a note is how in aeronautics the western countries and the USSR developed an artificial horizon with completely different display (direct vs. indirect): https://aviation.stackexchange.com/questions/51791/how-is-a-confusion-possible-between-western-and-russian-attitude-indicators https://aviation.stackexchange.com/questions/51791/how-is-a-... https://glance-efis.com/direct-and-indirect-attitude-indicator/ https://glance-efis.com/direct-and-indirect-attitude-indicat...