New, unused TTM back strength meter. Capable of measuring up to 300kg. Unused, with instruction manual. Brand: TTM Tsutsumi Seisakusho Co., Ltd. Type: Back Strength Meter Accessories: Instruction manual, chain Condition: Boxed Country of origin: Japan TTM (Tsutsumi Seisakusho Co., Ltd.) Back Strength Meter A high-quality, made-in-Japan physical strength measurement device capable of measuring up to 300kg. Widely used in schools and sports facilities for physical fitness tests and fitness assessments, it is known as a reliable product that provides accurate measurements. This is a standard analog model so sturdy that it can withstand decades of use by thousands of students in schools, but you can still enjoy the pleasure and thrill of seeing the needle rise visibly. It has an easy-to-grip measuring bar and accurate measurement functions. Even after its purpose is fulfilled, it is robust and rare, making it possible to resell at a high price in the used market. Main uses: Physical fitness tests, sports tests, fitness equipment, measurement of results of muscle training, events, neighborhood associations, festivals, company strength competitions, etc. ◆ Back Strength Back strength is one of the muscle groups that should be prioritized for training in order to maintain daily body stability, relieve pain such as stiff shoulders and lower back pain, prevent lower back pain, extend healthy lifespan, and maintain an ideal body line (posture). The average value for adult men is about 145kg at 20-29 years old; 150kg-200kg is considered a high level of physical ability; 200kg or more is a top athlete class; and 250kg or more is a sumo wrestler or wrestler class. A back strength meter is the easiest-to-understand tool for measuring muscle strength for those who want to strengthen their core and physical strength through bodyweight training, home training, gym visits (it's not often found in gyms), and sports, and it allows you to be aware of your current level and increase motivation by setting numerical goals. Instant purchase welcome!