Stanley Proto has added three fixed ratcheting head models to its line of electronic torque wrenches. The wrenches accept standard Proto sockets and come in ¼-, 3/8- and ½-inch drive versions with torque ranges from 25 in.-lb. (2.8 Nm) to 250 ft.-lb. (339 Nm). The torque wrenches are accurate to within +/- 2 percent of indicated value in both directions, while 99 onboard memory storage locations help improve efficiency when taking multiple torque readings.
The fixed ratcheting head features a robust 24-tooth design with a 15-degree arc swing, an alloy steel drive gear for strength and durability, a low-profile design to facilitate easy access and a reversing lever design to help ease one-handed operation. Features and benefits include:
• An easy-to-read LCD display with large digits;
• Three units of measure (ft.-lb., in.-lb. and Nm);
• A rotating head for easier viewing of the LCD display from any position;
• A fast sampling rate that allows the wrench to measure peak torque the moment it’s reached;
• Track and Peak Hold modes as a standard feature (In Track Mode, the wrench displays real-time torque; in Peak mode, it holds the highest measured torque until released.); and
• Visual and audible indicators that are helpful when working in low-light conditions. A green light appears and a buzzer sounds when the target is reached; a red light appears with an intermittent buzzer when it is overtorqued; and an audible buzzer helps identify when desired torque target zones are approaching and met.
The wrenches, manufactured to meet or exceed ASME B107.28, are designed ergonomically for user comfort and operate on standard 9-volt batteries. Users also have the option of adding Proto Software that allows for full two-way communication between the torque wrench and a personal computer. The software lets users download all data captured by the Torque Wrench directly into a spreadsheet or all at once from onboard memory. The software, which also allows users to control all settings on the torque wrench either from the wrench or computer, comes on a CD and includes a cable for connecting the torque wrench to the computer’s USB port.