The Internal Bond Strength Tester measures interlaminar peel strength of paper and paperboard by the Scott type method. It tests five specimens at once, uses mechanical pressing and a 0.01° angle sensor, and displays results on a 7-inch touchscreen. Units include ft.lb/1000.in², Kg.cm and J/m². It complies with TAPPI UM403, TAPPI T569 and GB/T 26203-2023.