After yesterday’s post, a certain family member, who has a facility for things mechanical, did not believe the level as it was placed on the new shelf, and demanded that we do the marble test to see if the shelf is, indeed, level.
So I went down to the basement to look for one, but alas I have lost my marbles, so I ended up with this:
That is a 40 mm celluloid plastic spheroid designed for an upper-class, Victorian after-dinner parlour game (it’s a Ping Pong ball).
The ball was dutifully placed on the shelf……. where it did not roll…. as demonstrated in the accompanying photo.
Q.E.D.
(it is amazing what you can do with a camera when the shutter speed is set to 1/1000th of a second).