Had another play this arvo but again ( I'm an idiot ) , mustn't have had the SD card fully connected.
Having looked at
@Skylarking video that sort of quality images is what used to for ones where I worked.
This little thing is nowhere near that good for viewing/ images ,focus/range.
I threw a steel screw into the plenum of the intake manifold on the spare engine .
Had a look = found it and then attached the magnet attachment and retrieved said screw.
What became apparent is
1. camera can focus and give better range/views if the light source is not the LEDs in the camera .
2. In focus is about 35 mm to 42 mm from the camera.
With the magnet attached , the back of it at 40mm from the camera was in perfect focus and the screw when attached to the magnet was 50mm away.
You can side it further down to bring the magnet closer to the camera.
The magnet is pretty strong so not shore how effective (PITA ) it would be in say trying to retrieve said screw from in a chassis rail=steel.
The attachments.
Photo from my phone before I removed the camera/magnet/screw.