Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 167,647 pages of information and 247,064 images on early companies, their products and the people who designed and built them.
Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 147,919 pages of information and 233,587 images on early companies, their products and the people who designed and built them.
Seismic surveyor, well logger and processor of seismic data.
1950 The company was incorporated to acquire Seismograph Service Ltd
by 1986 was a member of the Raytheon group of companies
1993 A subsidiary of Schlumberger plc. All of the activities and assets except for GeoQuest were transferred to Geco-Prakla (UK) Ltd
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