"power+supply"

Digital counter/timer for measuring duration of motion, transition times, periods, pendulum periods, frequencies, as well as for counting events or Geiger tube pulses. Includes a speaker that can be turned on and off, and power supplies for direct connection to light barriers. For event counting, a fixed counting period can be programmed in a range from 0.1ms to 99999s. Counter events (e.g. start or stop) can either be triggered by a signal to the input sockets or manually via switches. The unit includes a plug-in power supply.

Simplifies exercise band and exercise tubing use.

Designed by Retired Houston Police Officer

Release Powder Easily, Even Overhead

Deck of 54 traditional playing cards. Plastic coated on both sides. Ages 3+.

Classroom supply items for your every day needs.

Cellophane Roll

Refine your taping skills.

Educational Materials, Marble, metal

Clothespin, Spring

The Hb201+ System is a point of care In-vitro analyzer used for quantitative determination of hemoglobin in capillary, venous and arterial whole blood.

Light color cardstock tagboard.

Now you can put your body's static electricity to good use with this small neon bulb.

Pins

Bulk rolls for easy length adjustment.