Gimbal vs Optigraph - What's the difference?
gimbal | optigraph |
A device for suspending something, such as a ship's compass, so that it will remain level when its support is tipped.
to use a gimbal
A telescope with a diagonal eyepiece, suspended vertically in gimbals by the object end beneath a fixed diagonal plane mirror. It is used for delineating landscapes by means of an attached pencil.
(Webster 1913)
