Used to indicate tension of wire. One inch of compression equals 150 lb of pull. Use one in conjunction with in-line strainer for each leg of fence. Electroplated to deter rust.

• Accurately measures fence wire tension
• 1 in of spring compression equals 150 lb of tension
• Reacts to expansion and contraction on the fence wire
• Conductive metal spring maintains fence power
• Use one with every in-line strainer

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