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).
| 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 |
¹ Accuracy established under laboratory conditions.
² Other ranges available on request.
