Gear or cog outline without a center hub, a map symbol for a factory; also used as a settings icon.
256 characters in the Miscellaneous Symbols Unicode block, from number 238.
U+26EDGEAR WITHOUT HUBU+26EEGEAR WITH HANDLESU+26EFMAP SYMBOL FOR LIGHTHOUSEU+26F0MOUNTAINU+26F1UMBRELLA ON GROUNDU+26F2FOUNTAINU+26F3FLAG IN HOLEU+26F4FERRYU+26F5SAILBOATU+26F6SQUARE FOUR CORNERSU+26F7SKIERU+26F8ICE SKATEU+26F9PERSON WITH BALLU+26FATENTU+26FBJAPANESE BANK SYMBOLU+26FCHEADSTONE GRAVEYARD SYMBOLU+26FDFUEL PUMPU+26FECUP ON BLACK SQUAREU+26FFWHITE FLAG WITH HORIZONTAL MIDDLE BLACK STRIPE