| Typical application | Short runs, small drains, and indoor branch lines | Residential and light commercial drain inspections | Longer mains and larger commercial or municipal lines |
| Typical pipe diameter | About 1½–4 in (38–100 mm) | About 2–6 in (50–150 mm) | About 3–12 in (75–300 mm), depending on the camera head and centering accessories |
| Camera head diameter | About 17–23 mm (0.67–0.91 in) | About 23–29 mm (0.91–1.14 in) | About 29–40 mm (1.14–1.57 in) |
| Camera head style | Small fixed or self-leveling head for tight bends | Fixed or self-leveling head; interchangeable heads may be available | Typically a larger, more robust head; pan-and-tilt options may be available |
| Push-cable length | About 20–30 m (65–100 ft) | About 30–60 m (100–200 ft) | About 60–120 m (200–400 ft) |
| Push-cable diameter | About 5–6 mm (0.20–0.24 in); flexible for smaller lines | About 6–9 mm (0.24–0.35 in); a balance of flexibility and push strength | About 9–11 mm (0.35–0.43 in); stiffer cable helps with longer pushes |
| Viewing and lighting | Color image and adjustable LED lighting; confirm usable visibility in the pipe size you inspect | Color image, adjustable LED lighting, and a monitor suited to frequent field use | Color image with adjustable lighting; verify detail and glare control at greater viewing distances |
| Monitor size | Typically 7–10 in (18–25 cm) | Typically 7–10 in (18–25 cm) | Typically 10–12 in (25–30 cm) |
| Recording and reporting | Check for still-image and video capture if documentation is needed | Video and still-image recording are useful for service records and customer reports | Look for recording, clear file export, and on-screen distance or job annotations |
| Distance measurement | Optional or basic counter; check how the reading is calibrated | Useful for locating a defect along the inspected run | Especially useful for long runs; compare measurement method and stated accuracy |
| Water resistance | Check the camera-head IP rating and the manufacturer’s stated immersion conditions | Look for a sealed camera head and a protected monitor and controls | Confirm ratings for the camera head, connectors, and reel separately |
| Best choice when | Portability and maneuverability matter more than maximum reach | You need one system for a broad mix of routine drain jobs | Long cable reach and stronger pushing performance are priorities |