200 / | HD | ELECTRICITY: CIRCUIT MAKERS AND BREAKERS |
402 | DF | SNAP {4} |
405 | DF | .~ Double snap {17} |
453 | DF | .~.~ Compression spring (e.g., push force) {2} |
454 | DF | .~.~.~ Both ends of spring move {4} |
456 | .~.~.~.~ Both ends of spring are carried by blade (e.g., leaf spring) |