STM Series Digital Tension Meter is specially used to determine the tension of sewing thread. Yarn tension meter with tension range up to 500cN or 1000 cN or 2000cN.2. Storage of last, average, MAX MIN, PEAK-MAX, PEAK-MIN values as well as statistical analysis (average value) during a user-selected period.3. Motorized take-up fixture to have constant speed of the thread 12 m/min.4. Vacuum base for positioning the unit on the work plate when tension is measured at the sewing machine.5. Microprocessor technology with high steadiness. Technical Specification Model: STM500, 1000, 2000Digital Tension MeterTension range0~500, 1000 or 2000cNOverload protection200% FSHousing material Aluminum profile with Aluminum outer casingHousing dimensions215×100 (145) ×105mm(W×D×H) Weight: , tension meter 1.5~2kg, vacuum base: 0.5kg Weight: , net (gross)Approx. 1.8kg (3.8kg)