An hourglass measuring a fixed amount of time (not necessarily one hour)
- ‘She glanced over at the sandglass, and started.’
- ‘Early oceanic travellers used a sandglass to tell the time.’
- ‘In addition to their lack of accuracy, sandglasses, waterclocks and candles were also limited in the total length of time they could measure before having to be reset.’
We take a look at several popular, though confusing, punctuation marks.