... ARRANGEMENTSDifferential, duplex, and other types of screws can provide slow and fast feeds, minute adjustments, and strong clamping action.Rapid and slow feed. With left- and right-handthreads, slide motion ... apositioning device, besides its estab-lished uses as antennas for spacecraft and portable equipment and as gravity gradi-ent booms and sensing probes.Curled by heat. Retractable, pre-stressed coil ... rotation, and that there be a zero gap between sec-tor and saddle nut.Pivots with a TwistA multipin flexure-type pivot, developedby Smiths Industries in England, com-bined high radial and axial...