[johnre]

My model, for all the reasons that many above outlined:

Dual Lens Endoscope Camera with Light, Teslong 4.5" HD Snake Borescope Inspection Camera, Automotive Scope Camera with Flexible Cable, Home Waterproof Fiber Optic Camera for Sewer Drain Pipe (16.5ft): Amazon.com: Industrial & Scientific

Dual Lens Endoscope Camera with Light, Teslong 4.5" HD Snake Borescope Inspection Camera, Automotive Scope Camera with Flexible Cable, Home Waterproof Fiber Optic Camera for Sewer Drain Pipe (16.5ft): Amazon.com: Industrial & Scientific

www.amazon.com

It has a dedicated display, a front or side looking lens, a few attachable retrieval accessories, 5 metres of cable length (often needed for looking down my shop dust collection ductwork), and pretty good depth of focus. And I‘ll offer one more reason for something with a dedicated display - they will usually make the USB C connection a solidly gripping plastic surround, so that moving the cable to manipulate the head won’t transmit stress to the electrical connection and cause it to lose connection. This can’t be easily done with a PC or smart phone connection. Mine has this nice feature, and it actually locks to the display and needs a button push on the side to release it.

Umm, an endoscope is for human body cavities?
I'd say that the Amazon listings have it all wrong.

Usually they call a mechanical inspection camera a borescope and a medical one an endoscope, to distinguish the end use (pun intended). I note my model uses both names, but the first few pages of my instruction manual tell you not to use it for medical purposes, of course.

 

[johnre]

Looks like you guys are leaning me more towards the all-in-one units .....

And I forgot two other things:

1. With my dedicated-display Teslong, I'll never, ever need to worry about compatibility running with upgrades to my OS, or long term driver availability for any OS.
2. You do have to somehow fixture the dedicated display so it doesn't flop around when you manipulate the cable to get the lens into position. Mine has a threadsert in the back and I use a portable tripod to keep it situated.

DIY colonoscopy!

I'm amazed we made it to the eighth post in this thread before this was mentioned.