Jonard Tools Dynamometer Force Gauge (60-500 g) | JON-GD-50 Fire Door Release Devices Switch on/off devices at open

Switch on/off devices at open or close limits

ensuring the continued operation of your gate operator

The THP Torsion Spring 2" ID 262x2x37 offers the perfect combination of strength and durability with its superior-quality steel construction

High for a super-bright beam

Jonard Tools Dynamometer Force Gauge (60-500 g) | JON-GD-50 Fire Door Release Devices Switch on/off devices at openJonard Tools Dynamometer Force Gauge (60 500 g) JON GD 50 The Jonard Tools Dial Force Gauges (also referred to as Dynamometer Gauges or Tension Gauges) are all ergonomically designed and have become the industry standard for measuring force.