CDI, part of the Snap-On corporation, is a torque specialist, and this is the cheapest tool it offers. Accuracy is acceptable, and it too is impossible to over-tighten with a cam-over design. Given the number of affordable designs available elsewhere, there isn’t much to argue in favour of the beam-style torque wrench. That said, it’s certainly better to use a beam-style torque wrench than not to use anything. Best torque wrenches for cyclists, as rated by our expert testers Price and Warranty – The higher the price the better the quality of the torque wrench. Quality tools offer the best warranty to ensure that it is fixed or replaced when damaged. Technical Information on Fasteners: Design recommendations 11.1 Inside drives for screws – AW drive (AW-Antrieb)" (PDF). Adolf Würth GmbH & Co. KG . Retrieved 2 March 2017. These typically consist of a handle and bits with a torque bar. The torque bar usually features a set of numbers, denoting the torque and an arrow underneath. Once you’ve assembled the tool, you tighten the bolt while carefully monitoring the arrow until you reach your desired torque.

It includes a set of bits. The hex bit is perfect for Vortex Bobro mounts, the 2.5mm Hex bit fits Razor Red Dot, and the 3mm Hex bit fits hunter rings. The CM-202 and CM-203, T15 Torx bit fits Viper rings and Tactical rings. There are also other bits included that fits the Hunter and Viper clamp bolt

Online Resources

a b "TORX Drive System" (PDF). Textron Fastening Systems. Archived from the original (PDF) on 2007-01-02. The handy little ATD-1.2 torque wrench covers the critical 4-6Nm torque range in 0.5Nm steps, and includes 3, 4, and 5mm hex bits, plus T25. Matthew Allen / Immediate Media If you do not know the right device for this work, you do not need to worry, as this post will help you narrow down your search. The devices on this list are affordable but very effective. Scope Mounting Torque Wrench List The matt-finish chrome-vanadium tool bits have kept corrosion at bay. Images: David Caudery / Our Media

An old favourite, the CDI Torque Preset T-Handle is a reliable choice. David Rome / Immediate MediaYou can often buy preset 4, 5 or 6Nm torque wrenches, with some designs also offering preset adjustability within that range.

The included bits will see you through most repairs, and the case keeps it all together. However, it’s penalised for its price given that some online retailers sell effectively the same thing under a different name for less money.It comes in a foam-lined hard plastic case, something we found tough to actually get the tool out of. However, it does keep it safe and all the bits together. TS Star Bits (5 Sided) 1/4"D 7pc - Part No. 3389 - Part of the TS Star/Torx* Plus range from Laser Tools" . Retrieved 14 July 2016. Construction Range Overview (Fasteners: Introducing the AW Drive System, p. 3)" (PDF). Würth New Zealand. 2016.