are instruments for taking the declinations, inclinations, and reclinations of planes; and they are of several kinds.

The best sort for taking the declination consists of a square piece of brass or wood, with a limb accurately divided into degrees; and every fifth minute, if possible, having a horizontal dial moving on the centre, made for the latitude of the place it is to serve in; and which has a small bit of fine brass fixed on its meridian line, like a fiducial edge, to cut the degrees of the limb: for at any time when the sun shines, by having the hour of the day, you may find the declination of any wall or plane by this instrument.

DECLINATION of Judges. See LAW, No. clvi.

12. DECLIVITY denotes the reverse of ACCLIVITY.