I am looking for a small hand-operated machine screw jack (or linear actuator) type device. I only need about 6 inches of travel, the unit needs to be compact and able to lift approximately 50 lbs. I know there are a lot of motor driven actuators out there but this needs to be hand-operated...
I am having trouble locating any suppliers for a locking ball and socket type joint (perhaps something similar to what is used on a camera tripod). The joint will be used to position a HPGe gamma radiation detector over a person lying down in a dental chair. The joint must be capable of...
