Jonard Tools Dynamometer Force Gauge (60-500 g) | JON-GD-50 Fire Door Release Devices **Duty Cycles depend on gate

**Duty Cycles depend on gate size and installation

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

Pin Diameter: 0

Its break-away function (optional

Doorking Main Shaft For Models 605

Jonard Tools Dynamometer Force Gauge (60-500 g) | JON-GD-50 Fire Door Release Devices **Duty Cycles depend on gateJonard 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.