The Model 1900 Magnetic Extensometer is designed to measure settlement or heave of soft ground under the influence of loading or unloading due to the construction of embankments, fills, buildings, foundations, and structures. A probe is lowered inside a telescoping guide tube to detect and measure the position of magnetic anchors located around the guide tube at various depths along the borehole or within the fill. Plate anchors are used in fill and “spider” anchors in boreholes.

Specifications:
Standard Range  unlimited (cable lengths 30, 150 m) 
Resolution  1 mm 
Repeatability ±3 mm 
Temperature Range −30°C to +80°C 
Borehole Size  102 to 152 mm 
Probe Dimensions (L × Ø)  178 × 19 mm

Geokon, Incorporated, 48 Spencer Street, Lebanon, New Hampshire, 03766 · USA. Tel.: 1(603)448-1562, FAX: 1(603)448-3216, e-mail: info@geokon.com