One of the best lab timers.
Very easy to use thanks to its single central backlit button and its easy to read display, this timer will allow you to choose to work either in seconds or in f-stops. You can also choose to add a foot pedal (optional, not supplied).
In addition, to make masking easier, this timer has a beeper that sounds every second during the exposure time. This beeper can be switched off or on, depending on your working habits.
Finally, its all-metal construction is one of a kind.