The Draper ETBT Sonic Belt Tension Tester is a precision diagnostic tool designed for professional mechanics and vehicle technicians working with drive belt systems. This electronic tester uses sonic measurement technology to accurately assess tension levels on camshaft, timing, and auxiliary drive belts, ensuring optimal performance and preventing premature wear or failure. Using an integrated microphone and flexible probe, the device measures belt vibration frequency to determine precise tension levels. This sonic testing method provides reliable readings even in cramped engine bays where traditional tension gauges struggle to access. The 115mm flexible probe is particularly valuable when working around complex engine layouts or testing belts positioned deep within the engine compartment. The tester features 20 internal memory slots for storing measurement data, allowing technicians to record and compare multiple readings during installation or adjustment procedures. With a frequency range of 10-600Hz, the device accommodates various belt types and widths. An automatic power-off function activates after five minutes of inactivity to conserve battery life. The unit weighs just 242g and measures 165 x 65 x 30mm, making it compact enough for mobile mechanics and workshop technicians alike. Features and Benefits: • Flexible test probe, ideal for use in restricted engine bays • Frequency range 10-600Hz accommodates various belt types • 20 memory data storage settings for comparing multiple readings • Auto power-off after five minutes of inactivity to preserve battery • Compact and lightweight design at 242g for portability Specifications: Frequency range: 10-600Hz Probe length: 115mm Tester probe length: 42mm Dimensions: 165 x 65 x 30mm Weight: 242g Power supply: 2 x AAA (not supplied) Contents: 1 x Sonic Belt Tension Tester

Retailer feed snapshot imported on 21 October 2026. Not live-checked or automatically refreshed. Confirm delivery, stock and final price at the retailer.