246 / | HD | RAILWAY SWITCHES AND SIGNALS |
393 | SWITCH STANDS {8} | |
394 | DF | .~> Cab signal or train control |
395 | DF | .~> Resetting {5} |
401 | DF | .~> Rail lock and position indication {1} |
403 | DF | .~> Three and multiple throw |
404 | DF | .~> Adjustable throw |
405 | DF | .~> Spiral-cam actuated |
406 | DF | .~> Gear actuated |
407 | DF | .~> Structural types {4} |