Specifications :
Sensor : Black and White
bimetallic strips
Calibration : Cal/cm2.
Min
Full Scale : approx. 2
cal/cm2. Min
Spectrum sensed : 90%
Transmission, 0.36 to 2.0 micron wave length
Drum Rotation : 7days or
24hours
Clock drive : Spring
wound
Size : 32x29x18cm
Weight : 6kg (approx)