Model 4422

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Micro Crackmeter (VW)

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: 0.001 mm
Accuracy¹: ±0.1% F.S.
Nonlinearity: <0.5% F.S.
Temperature Range²: −20 °C to +80 °C
L × Diameter: 120 × 8 mm

¹Accuracy established under laboratory conditions.

²Other ranges available on request.