Accurately measure the tension of your wire fence with the Zareba Large Fence Tension Spring. This conductive spring can absorb pressure on your fence and maintains fence power while it's in place. Get visual feedback of the tension the wires and keep your fence strong and secure through all seasons as the spring reacts to the expansion and contraction caused by changing temperatures.

• Measures wire tension on the fence line
• 1 in of compression equals 150 lb of tension
• Helps absorb expansion and contraction of the fence wire
• Use one with every in-line strainer

• https://assets.unilogcorp.com/187/ITEM/DOC/Zareba_100000464_Catalog.pdf Catalog