The Rl-H4C Auto-Leveling Laser has a working radius of 2,600 ft and can be used as a reference for machine-mounted receivers. The self-leveling motors in the laser are accurate to within 10 arc seconds during surveying applications. The laser is available in two versions, powered either by a rechargeable NiMH battery pack with 60 hours of use on a single charge or by alkaline D cell batteries with 100 hours of continuous use. Both models can use AC power sources. Topcon Positioning Systems; 925-245-8300; www.topconpositioning.com

The Caddy Rod Lock is designed to simplify installation of electrical and mechanical systems supported by threaded rod. Rods are pushed through the caddy and lock into place, saving time. Erico; 800-252-2339; www.erico.com