The SVR 25' SVR (10ths) heavy-duty level grade rod is constructed of strong reinforced fiberglass and its rectangular-oval shape is designed for the serious user. Scales are glare resistant and protected by an abrasion resistant coating. A special measuring scale on the backside permits users to read height at eye level. The tight locking mechanism features round buttons that resist jamming from sand and dirt. The top of the rod has a female 1/4" x 20 thread for attaching accessories.