linkstream2 microblog

https://en.wikipedia.org/wiki/Block_and_tackle

http://www.historyofinformation.com/detail.php?id=4755

https://en.wikipedia.org/wiki/Bramah_lock

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The Challenge Lock is in the Science Museum in London. An examination of the lock shows that it has been rebuilt since Hobbs picked it. Originally it had 18 iron slides and 1 central spring; it now has 13 steel slides, each with its own spring.[3]
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https://en.wikipedia.org/wiki/Joseph_Bramah

locks & WCs

https://en.wikipedia.org/wiki/Henry_Maudslay

https://en.wikipedia.org/wiki/John_Harrison

Also, Longitude
The maker of H1 to H4

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Harrison’s last home was 12, Red Lion Square, in the Holborn district of London.[23] There is a plaque dedicated to Harrison on the wall of Summit House, a 1925 modernist office block, on the south side of the square. A memorial tablet to Harrison was unveiled in Westminster Abbey on 24 March 2006, finally recognising him as a worthy companion to his friend George Graham and Thomas Tompion, ‘The Father of English Watchmaking’, who are both buried in the Abbey.
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Today the restored H1, H2, H3 and H4 timepieces can be seen on display in the Royal Observatory at Greenwich. H1, H2 and H3 still work: H4 is kept in a stopped state because, unlike the first three, it requires oil for lubrication and so will degrade as it runs. H5 is owned by the Worshipful Company of Clockmakers of London, and was previously on display at the Clockmakers’ Museum in the Guildhall, London, as part of the Company’s collection; since 2015 the collection has been displayed in the Science Museum, London.
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https://en.wikipedia.org/wiki/Rupert_Gould

https://en.wikipedia.org/wiki/The_Iron_Bridge

https://en.wikipedia.org/wiki/LIGO

https://en.wikipedia.org/wiki/Isaac_Wilkinson