Our spreadsheet : Thanks to the following sheet, you will be able to approximately know the tension into your gear (slings, shackle, slackline, etc.). You will then know if you are using it correctly, meaning correctly regarding the using advices and most important the strength limits. Click there to see the sheet and enter your datas
The dynamometer or Linescale This product allows you to mesure exactly what is the tension into your equipment. For more informations click there.