Liutprand's 30 Minute Hourglass Timer.
23cm hand blown glass 30 minute timer with stand.
Contains ground glass for consistent accurate timing.
The Hourglass was the invention of an 8th century monk named Luitprand.
Hour glasses were commomly used by sailing ships as a navigation aid, replaced by the mechanical 'clock' after 1500AD.
Includes metal mounting frame on a painted wooden stand.
Add a charming and facinating modern artifact as a display piece to your collection.