Del-Tron Precision Inc. has added 1 3 1-in. linear actuators to its Posi-Drive line of stages. The devices, which are available in a travel length of 0.75 in., provide 0.0005-in./in.-of-travel straight-line accuracy and 0.0001-in. repeatability. They offer a 0.168 x 0.125-in. leadscrew, which drives the slide from the center and is supported by bearings. An antibacklash nut and a flexible zero-backlash coupling that accepts a sigma mini servo MS10 motor also are provided. The ball slide version and the roller slide configuration can carry 8- and 15-lb loads, respectively.