US$ 54.41
with 96 peg positions accommodating full class sets between washing and reuse
90mm 3-element uni-focal lens
each with a removable threaded hook for mass-and-density comparison in pendulum-period investigations
Designed to generate and detect ultrasonic waves above the audible range
PVC Lab Thermometer, -40 to 50°C Prepared Slides_Botany with 96 peg positions accommodatingSpirit filled glass thermometer on a white PVC backing, sized for room temperature and refrigerator monitoring in classrooms and field use settings.