Antique wood surveyors stick that can starts at 6' and can extend to 12', the ruler graphic is stamped in and faintly visible but it includes brass stops an adjustable brass target, here is what the robot says about it; "A target staff is used to take readings against a target, which is usually a round or oval plate with contrasting colors in opposite quarters. The target is adjusted by the rodman to align with the instrument's crosshairs, and the rodman then records the level value."