Guidepost

n.

1.

A post at the fork of a road, with a guideboard on it, to direct travelers.

Noun	1.	guidepost - a rule or principle that provides guidance to appropriate behavior Synonyms: rule of thumb, guideline
	2.	guidepost - a post bearing a sign that gives directions or shows the way Synonyms: signpost

arrow, blaze, compass needle, direction, direction post, finger post, fist, guide, guideboard, hand, hour hand, index, index finger, lead, lubber line, milepost, minute hand, needle, pointer, signboard, signpost