Big minus is the quality of the "egg timer" per se.
The turntable is not sitting 100% on straight, between 0 and 30 minutes (180 °) have seen a skew of 2 mm, which corresponds to an angle of about 3%. In addition, the start / end point does not match the line. At rest, the pointer is 5min before 0 / 60min display.
What's not quite like the fact that the "egg timer" the bell is missing, so I do not necessarily mitbekomme when the set camera pan is over. Because as I said the line is not exactly right, so that's a bit difficult to understand.
I would buy the part not again, instead I can recommend the Flow-Mow. Here is the "egg timer" worlds better (because nothing jerky and processing true). The part also swivels only half as fast (120min = 360 °). The special shape can also easily read when the swing is over (a bell is missing here as well).