External Voltage Sensor for the Philip Harris SensorDisc.
The probe is connected to the SensorDisc Datalogger via the micro-USB external prob
External Respiration Sensor for the Philip Harris SensorDisc
The probe is connected to the SensorDisc Datalogger via the micro-USB external p
External Current Sensor for the Philip Harris SensorDisc.
A Magnetic Field Sensor for the Philip Harris SensorDisc. The sensor connects to the Philip Harris SensorDisc Datalogger via the Micro-USB ex
A Heart Rate Sensor for the SensorDisc Datalogger.
The heart rate sensor for connection to the SensorDisc Datalogger is capable of measuring
A working model of the planetary system with a 'Star dome' making it a versatile aid for teaching basic astronomy. The planetarium comprises a circ
Discover our Solar System with the Celestron AstroMaster 90EQ! You'll be ready to observe in minutes thanks to the quick and easy no-tool setup. Th
The Orbit Orrery model of the Sun lights up and features the planets as far as Neptune. The Earth has a moon and the planets can be moved around th