Author: Hans Imfeld
Institution: Stanford Linear Accelerator Center, Stanford University
Co-Author: P. Pelissier, R. Ruland
A High Accuracy Portable Hydrostatic Level
The HLS is a portable waterlevel which can achieve an accuracy of 5 micron for the elevation difference between two benchmarks up to 50 m apart. The system design is presented and the major components are explained. This is followed by a discussion of the measurement procedure. Some measurements are presented which verify the achievable accuracy.