Trimble DiNi LD13 3 m Invar Barcode Rod with Certificate Support demanding precision leveling applications with the LD13 3 m Invar barcode rod , designed for Trimble DiNi digital levels. Its Invar construction and DiNi code graduation provide a stable measurement reference for precise elevation work, control networks, monitoring, and other high-accuracy leveling applications. This version is supplied with a certificate including factor extension for the rod . Key Features 3 m (10 ft) Invar rod designed for high-precision digital leveling applications. DiNi barcode graduation supports automatic electronic readings with compatible digital levels. Invar construction provides excellent dimensional stability for precision measurement work. Supplied with certificate including factor extension for the rod . Compatible With Trimble DiNi Digital Levels