4 ms·
Magnets are probably way too expensive. Especially as you could get same functionality with regular fire ladder.
by vlehto 9y ago
Magnets are probably way too expensive. Especially as you could get same functionality with regular fire ladder.
- EGreg 9y agoHow would you shimmy down the ladder? But yes I suppose technically you can have rollers in vertical struts and have them roll down inside the rails, carrying the person.