Geometrics G-816

Sensitivity: +1 gamma throughout range.
Range: 20,000 to 90,000 gammas.
Sampling Rate: One reading every 6 seconds.
Accuracy: +1 gamma through 0° to +50°C.
Operating Temperature: Console and Sensor: -40°C to +85°C, Battery Pack: 0° to +50°C.
Storage: 0 readings.

Geometrics G-856

Operating Temperature: -20°C to +50°C.
Storage: Up to 12,000 readings.
Accuracy: +1 gamma, limited by remnant magnetism in sensor and crystal oscillator accuracy.