Inclinometer Casing Anchor is affixed to the bottom of the inclinometer casing prior to inserting it into the drill-rod/borehole. As soon as the anchor exits the bottom opening of the drill-rod / borehole, the spring loaded arms of the anchor are automatically extended to grip the borehole/duct wall. To view complete product specifications on the RST Inclinometer Casing Anchor click on the Download