Jewell Model 4420 Crackmeter

Jewell Model 4420 Crackmeter The Model 4420 Crackmeter is intended to measure movement across surface cracks and joints. It is installed by grouting, bolting, or bonding two threaded anchors (with ball joints) on opposite sides of the crack and then attaching the ends of the gage to the anchors. Standard […]

Jewell Model 4420 Crackmeter

The Model 4420 Crackmeter is intended to measure movement across surface cracks and joints. It is installed by grouting, bolting, or bonding two threaded anchors (with ball joints) on opposite sides of the crack and then attaching the ends of the gage to the anchors.

Standard Range1 12.5, 25, 50, 100, 150 mm
Resolution 0.025% F.S.
Accuracy ±0.1% F.S.
Nonlinearity < 0.5% F.S.
Temperature Range -20°C to 80°C
Length x Diameter 318, 362, 527 mm × (shaft) 8 mm, (coil) 25 mm
Length x Diameter 318, 362, 527 mm × (shaft) 8 mm, (coil) 25 mm
Temperature Range -20°C to 80°C