scientific timer

Investigate functions of the nervous system with this interactive laboratory activity. Using a reaction time, students measure response time to various stimuli including light, sound, and touch. Materials are included to allow students to develop...(more)

The Sportline(r) Sport Timer 226 Stopwatch has a colorful, translucent Gel look and is watertight to l00-ft. Its extra large display is easy to read.

Protect yourself and your family from harmful rays with this personal UV monitor. This device monitors the current UV index and temperature, and calculates your recommended exposure time based on UV, SPF and your personal skin type. Features:...(more)

Designed for general laboratory use, our quiet, smooth spinning centrifuges are equipped with auto shut off when the lid is raised. Variable one touch programming of speed and time with LED display panel. Memory function remembers last operation...(more)

Rugged, extremely compact, watertight all purpose stopwatch. Extra Large Display. Designed to meet multiple timing needs. Features: Times all sports activities Time out & split features Two place, fast finish memory Laser tuned for 1/100th second...(more)

replacement carbon disk for spark timer.

replacement paper roll for spark timer.

Step counter / Total distance / Calories burned / Week daily memory / Estimated finish time / Clock with alarm / Low batteries detect /PC download via USB Estimated target finish time Count-down/up timer Step, calorie and distance winthin timer ...(more)

Set up to 90 minutes of reading time, after which, the light will turn off automatically. Great if your child tends to fall asleep reading. Not your typical dim book light, this sleek unit features two bright LEDs that last 100,000 hours. Clips onto...(more)

Oregon Scientific's UV888 Personal UV Monitor lets you monitor your exposure to UV rays and protect yourself against skin cancer. The exposure timer uses three variables to calculate your recommended exposure time. It also monitors other local...(more)