The FTF through-hole torque sensor is a versatile reaction torque transducer available in both aluminum and stainless steel, depending on the torque range, which spans from 10Nm to 1000Nm. It utilizes a Wheatstone full bridge bonded to a specially machined elastic element to achieve high accuracy with a maximum non-linearity of 0.2% across a wide dynamic range. Designed with end flanges, the FTF can be easily bolted between shafts, axes, or mounting plates in applications requiring direct drive. Its central through-hole design allows for the passage of rotating shafts, making it suitable for certain dynamic torque measurements. This feature enables the sensor to function not only in stationary torque monitoring but also in select rotating applications. Typical uses include motor torque testing, test bench systems, screwdriver calibration, fatigue testing, tightening torque control, twist measurement, and actuator or servo motor evaluation. With its robust structure, reliable performance, and adaptable mounting options, the FTF is ideal for both laboratory and industrial environments. Additionally, customized versions are available to accommodate specific application needs, offering flexibility for a broad range of torque measurement tasks.