What ho, chums!
Thought you might like to know that tomorrow this camera is for sale for only £39.99. (Scroll down.)http://www.lidl.co.uk/en/our-offers-2491.htm?id=573
The camera will go through a plug hole with ease. I bought one a while ago when they were a good deal dearer (I'm a bit of a sucker for interesting tools!) and found that although I use it rarely, when I do there's no substitute apart from disassembly of whatever's the worry. The last time I used it was when I woke up in the night wondering if I'd banged over the tab washer on my VB's mainshaft that secures the nuts and the drive sprocket. Fiddling with a dentist's mirror and a torch thro' the primary chain's inspection hole didn't work but the camera showed me immediately that I'd not done it. So there yer go. Off will come the clutch, outer chain case, etc.
If your interested, I recommend you get to your nearest Lidl when they open; they tend have only 2 or 3 of such things in any shop. Regards, MikeN.