This is the bombsight I made for my G11N3 Hakusan. An aircraft with the maximum speed of about 400mph can use it directly. or you need to change the angle range of the two rotators to let it suit your aircraft.

Instructions of the Bombsight:
1.In the bombing, to make sure that the aircraft at smooth flight with full throttle and full speed (Maintain flat flight with flaps at high altitude);
2.Bombsight need to adjust the angle with Trim,to adapt to different flight altitude.Active group 6 before adjustment.The initial position corresponds to 5000ft.The 5 gears of the Trim correspond to 20000/30000ft (the central cross line corresponds to 20000ft,the rear cross line corresponds to 300 000ft), 10000ft, 5000ft, 1000ft and a useless gear from top to bottom.
3.Drop bombs when the center cross line (rear cross line at 30000ft) is aligned with the target.
------Control------
Throttle: Let the bombsight alignment initial position;
AG6/Trim: Adjust the angle according to altitude.