Key points in surveying history (1920 onwards)
1930's - Photo-mechanical magnetic and gyro survey tool
Prof. Angus Jamieson: Photo-mechanical magnetic and gyro survey tool
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1960's - Accelerometers and magnetometers
Prof. Angus Jamieson: Accelerometers and magnetometers
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1990's - Electronic memory and drop gyros
Prof. Angus Jamieson: Electronic memory and drop gyros
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Useful links
- Acid bottle survey
- Audio interview with John H Eastman (Discusses acid-bottle and Single shot survey instrument 2:50 – 11:53). Audio quality is not great but it is a fascinating insight.
- Survey tools (from Mechanical drift indicators to WMD)
- Rate gyros
- Mud-pulse telemetry