Cape Cleveland Light
... that, with a tower only 6.7 metres (22 ft) tall, the lighthouse keepers at Cape Cleveland Light had to wind the clockwork mechanism every 75 minutes?
... that, with a tower only <span about="#mwt76" data-mw='{"parts":[{"template":{"target":{"wt":"convert","href":"./Template:Convert"},"params":{"1":{"wt":"6.7"},"2":{"wt":"m"}},"i":0}}]}' id="mwFLI" typeof="mw:Transclusion">6.7 metres (22</span><span about="#mwt76" typeof="mw:Entity"> </span><span about="#mwt76">ft)</span> tall, the <a href="./Lighthouse_keeper" id="mwFLM" rel="mw:WikiLink" title="Lighthouse keeper">lighthouse keepers</a> at <b id="mwFLQ"><a href="./Cape_Cleveland_Light" id="mwFLU" rel="mw:WikiLink" title="Cape Cleveland Light">Cape Cleveland Light</a></b> had to wind the <a href="./Clockwork" id="mwFLY" rel="mw:WikiLink" title="Clockwork">clockwork</a> mechanism every 75 minutes?