Established in 1992, Gero Diagnostics is a Close Corporation owned by Robert Rettermayer and George Rettermayer.

We have branched out since 2005 into TLB hire, renting out to private individuals as well as large construction companies.

Located in the northern suburbs of Johannesburg, near Kya Sands, we strive to provide a service that is efficient, reliable and cost effective, to you the client. We welcome commercial, industrial and residential projects. We have friendly, dedicated staff, who will assess what your requirements are, and advise on proper procedures.


To be recognized and respected as one of the premier TLB Hire companies in Southern Africa, as well as having a reliable and strong reputation in the Plant Hire industry.


We strive to maintain our units to the utmost standards, thus providing maximum productivity and minimizing costs for our clients.


    • EXPAND our customer base.

    • DELIVER a level of superior service excellence, building interest, trust and

    • PROVIDE vigorous service through initiative, leadership and support.

    • INSTILL an environment of internal and external excellence in customer

    • EMPOWER and recognize each employee's unique contribution.

    • ACHIEVE the highest standards of quality.