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Single Point Mechanical Rod Extensometers


Single Point Mechanical Rod Extensometers

Model A-1


The Model A-1 Single Position Rod Extensometer is a very simple, rugged and reliable instrument, easily installed and completely recessed within the borehole for optimum protection. The Model A-1 is a natural first choice for monitoring the safety in and around tunnels and mine openings.




Standard Range


up to 100 mm

Least Reading 0.025 mm
Borehole Diameter 35, 44, 51, 64 mm
Maximum Length 10 m