RGS/0508 Spinlock Rig Sense Tension Gauge 5-8mm wire rope

Rig-Sense tension gauges are designed to be easy-to-use on dinghies and small boats, to measure loads in wire or rigging using a composite calibrated leaf spring.  
The gauge is able to be operated with one hand, supporting itself on the wire while the reading in kilograms is taken. 
The RGS/0508 is suitable for use with 5mm to 8mm cable.