Speed CheckR for Physics and Science testing.  Readings in meters/second with the option to toggle from immediate readings to delayed readings.  Unique mounting method enables very fast set-up and quick change-over for experimentation.  One simple-to-use device can be used for validation studies of gravity, acceleration, friction, momentum, and velocity measuring of: horizontal, vertical, rotational, and incline movements of objects.  Toggle switch enables device to ignore subsequent beam interruptions or to take immediate/repeated readings. Accuracy of readings:  .01 m/s from .5 to 10 m/s, .1 m/s from 10 to 50 m/s, and 1 m/s from 50 to 100 m/s.  Objects must be .125" width minimum.

Floor or bench-top stands for use with Speed CheckR models.  Enables Speed CheckR and laser beams to be mounted in various positions/angles quickly and easily.  Nickel-chrome plated stands quickly disssembles and each stand has rubber pads for good grip (or thermal insulation when set on ice).

Enables laser unit to be mounted onto a wall.  Bracket mounts to wall with screws and arm easily screws onto bracket for fast removal if so desired.  Mating magnet on end of arm provides quick attachment of Laser Unit.

Hard Shell Carrying Case for Speed CheckR models.  Holds Laser Unit, Speed Sensor, Mounting Stand Package and/or Ring Stand Kit.