Cap Torque Testersare precision instruments for measuring application, removal, and stripping torques for threaded closures on plastic bottles. Cap Torque Testers are a simple, accurate, and economical solution for manual measurement ofthe opening and closure torque on bottles, jars, containers and more.. Ideal for lab or production use for closure manufacturers, bottlers, food and beverage companies, and others. The cap torque tester captures peak readings for application and removal torques.