Category
page 115th-century inventions
printing press
device for evenly printing ink onto a print medium
anemometer
thumb|A hemispherical-cup anemometer of the type invented in 1846 by Thomas Romney Robinson|John Thomas Romney Robinson
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arquebus
thumb|Japanese arquebuses on a rack at Himeji Castle

rifling
thumb|Rifling of a 105 mm Royal Ordnance L7 tank gun
right|thumbnail|Conventional rifling of a 90 mm M75 cannon (production year 1891, [[Austria-Hungary)]]
thumb|Rifling in a GAU-8 [[autocannon]]
brace
type of hand drill

mainspring
thumb|An uncoiled modern watch mainspring.
thumb|Clock mainspring
thumb|A pendulum clock|pendulum wall clock movement showing the two mainsprings which power it. This is a [[striking clock which sounds the hours on a chime; one of the springs powers the timekeeping gear train while the other powers the striking train]]
gun port
opening on the side of a ship's hull
Mariner's astrolabe
Nautical navigational instrument
fusee
conical pulley-and-chain component in mechanical timepieces