Ján Gabko

2 followers
·
7 following
Ján Gabko
More ideas from Ján
‘Cannon dial for latitude 49° North. Cannon dials (or ‘time guns’ as they were occasionally known) were popular in the 18th century. A burning glass mounted above the plate would receive the sun’s rays at noon, so providing the heat to light the fuse at the end of the miniature cannon, causing it to fire and thus provide a signal for midday. Engraved on the dial-plate is the maker’s signature, Victor Chevalier Ingr. Breveté quai l’horlage 77 à Paris.’ (via National Maritime Museum)

heracliteanfire: “ ‘Cannon dial for latitude North. Cannon dials (or ‘time guns’ as they were occasionally known) were popular in the century. A burning glass mounted above the plate would.

Grasshopper 2 | Close up of the grasshopper. The grasshopper… | Flickr

Close up of the grasshopper. The grasshopper is connected to the pendulum. As ti swings back and forth. the pallets engage and disengage the 60 tooth escape wheel. The pallets are the levers seen mounted to the grasshopper's tail and back legs.