**Since I am an HVAC Service Techand do lots of furnace inspections and wrote the article “Heat Exchanger Inspection Methods” thought I would comment on this. Rigid has come out with a newer inspection camera the MicroExplorer which has an internal sd disk to record the inspection and a USB port. They have also come out with a 9.5mm camera head that can be used on the MicroExplorer or the SeeSnake. Milwaukee has also come out with an inspection camera similar to Rigid. Testo 318-V has a smaller head just a little larger than a pencil eraser.
The premier camera is “The Inspector” by Shamrock Industries. It is a more expensive camera has a larger head. It’s an infrared camera that uses only available light. Remote adjustable focus. And can record the inspection as a video on a sandisk.
Now each camera has its place. The screen size on each one is different. The Inspector of course has the largest screen and small details will are really blown up in detail on the tv screen. **
Rigid See Snake Micro Inspection Camera
Rigid 9.5 mm Imager Head
Milwaukee M-Spector Digital Camera
Shamrock Industries “The Inspector” the world’s first heat exchanger inspection camera