The Model 4422 is a miniature crackmeter intended to measure displacements across surface cracks and joints. It has been specially designed for applications where access is limited and/or where monitoring instrumentation is to be as unobtrusive as possible (e.g. on historical structures or buildings).

Specifications:
Standard Range  4 mm (±2 mm) 
Resolution  0.025% F.S. 
Accuracy ±0.1% F.S. 
Nonlinearity  <0.5% F.S. 
Temperature Range −20°C to +80°C 
L × Diameter   120 × 7.9 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