Videoscope display for the Extech HDV700-Series; probes sold separately. Compatible with a variety of camera probes. HD Camera Probes: 5.5 mm x 1 m and 5.5 mm x 3 m. Dual HD 4.9 mm x 1 m Camera Probe HD 2-Way Articulating Camera Probe (3.9 mm x 1m) 2-Way Articulating 4.5 mm x 1.5 m Camera Probe. 4-Way Articulating 6 mm x 1 m Camera Probe 4-Way Articulating 6 mm x 3 m Camera Probe 28 mm Camera Probe with 30-meter Plumbing Spool