Q: Do the Timer and Photogates have to be ordered separately, or do they come with each piece of equipment?
A: Our equipment kits--Physical Science, Physical Science Plus, Physics and Physical Science with Earth and Space Science--each come with one timer. When the equipment modules that require the Timer and Photogates are purchased individually, the Timer II with Photogates is sold separately.
Q: Will the timer unit work with other photogates besides CPO Science and vice versa?
A: Our equipment is not interchangeable with equipment from other manufacturers.