CURSOR

, a small piece of brass &c that slides; as, the piece in an equinoctial ring dial that slides to the day of the month; or the little ruler or label of brass sliding in a groove along the middle of another label, representing the horizon in the analemma; or the point that slides along the beam compass; &c.

CURTATE Distance, is the distance of a planet's place from the sun, reduced to the ecliptic; or, the interval between the sun and that point where a perpendicular, let fall from the planet, meets the ecliptic.