• Discounts available for multiple orders (3+) and for educational institutions.
  • Trade-ins on LaCoste and Romberg Air/Sea meters and land gravity meters available.

Please contact us for further information about Multiple Order discounts and Educational Institution discounts.

If you have an old LaCoste and Romberg Gravity meter (Air/Sea or Land) and have been thinking about servicing or upgrading to a new meter with more capability and easier use, now is a good time to check with ZLS for information on a trade-in.  Please contact our President, James Adams, for more information.  email:

7801 North Lamar Blvd. Suite E-184 | Austin, Texas 78752 USA | Phone: 512-453-0288 | Email:

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