This is an Intermediate Runway for the Bassin Anticipation Timers.
This Intermediate Runway can be added to existing Bassin Anticipation Timers to make the total Runway longer. A Bassin Timer can handle up to 38 Intermediate Runways.
For more information about the Model 35575 Bassin Anticipation Timer, view the ACCESSORIES tab.
The subject is instructed to watch a light as it travels down the runway. They must anticipate the light reaching the target and press a pushbutton, or perform some other action, to coincide with the arrival of the light at the target.