The popular CR Series of leveling rods are square, construction grade leveling rods and are available in many models.
The USL/SVR Series leveling rods are the most popular in the industry. Rectangle/oval in shape, these surveying grade leveling rods are available in a variety of models. LR Series
The first telescopic fiberglass leveling rod, the LR Series are round and durable surveying grade leveling rods.