... anti-impact ● Multi-purpose, wide application ● Automatic north-seeking, logging data read ● Out directly on surface Parameters ... perforatingFeatures:• Fast continuous survey, 5000m/hour.• Automatic north-seeking• High accuracy• High reliability, shock resistance, vibration ... • Net weight: 30 KgER-48 Continuous north seeking gyroTechnical Specification:Model: ER-481. Parameters can be ...