Protea Surveying Instruments CC, formed in 1986 by Dirk van der Walt, is a family run surveying instruments and construction material testing equipment supply business based to the East of Johannesburg. The company has grown organically over the 30 years since its inception, and today plays a major role in the supply and after sales support of a broad range of equipment which includes traditional surveying instruments, the latest technology GPS products and material testing equipment for Construction Material Testing Laboratories.The company Protea Surveying Instruments CC name changed in 2011 to Protsurv Geo Centre (Pty) Ltd.