HSS Hinge drill bit. Drill bit with a spring loaded sleeve that matches countersunk holes in cabinet hinges helping to give a accurate centre hole for screws. shank has a quick release 1/4" hex drive shank so as with correct bit holder makes it easy to change from drill bit to correct size screwdriver bit.
LevitationTM stores energy in a compact spring- loaded hinge mechanism as the knee is bent while weight bearing. The stored energy is released as the leg is straightened, thereby augmenting the output of the quadriceps muscles and assisting the knee extensor mechanism. The maximum force-output and range of motion assisted can be adjusted by the user or clinician as rehabilitation progresses.
A Russian silver gilt and cloisonne enamel traveling inkwell, Gustav Klingert, Moscow, late 19th century. The sides and hinged lid worked in a multi-color scrolling foliate motif within borders of turquoise enamel beads. The gilt interior fitted with a spring-loaded cap an container for ink.