By the end of the 13th century, Italian engineers were building large mechanical clocks inside towers, driven by slowly descending weights.

FORBES: No. 11 The Watch

Large mechanical rollers shape pool-cue sized rods of silver, there's the sound of metal being worked, and the smell of gas in the air.

BBC: How tech is transforming jewellery

Huts 11 and 11A at the Buckinghamshire museum were the first to house the large electro-mechanical Bombe devices, which decrypted German military messages during World War II.

BBC: Bletchley Park Enigma code hut to be restored

Kids were always gathering around to watch him wherever he would park himself after school with his large spiral pad and his mechanical pencil and begin to sketch the people nearby.

NPR: Roth Rewrites History with a 'Plot Against America'

The second is trying to deal with the oil that's on the surface above the well, where it comes up in large quantities and could be dealt with effectively through mechanical skimming and in-situ burning.

WHITEHOUSE: Daily Press Briefing

The guts of the present patent application (No. 206338) concern the mechanical and laser systems required to compensate for large, initial variations (as in head size) as well as smaller ones like temperature and head movements in order to create a reliable active alignement between the stereo images.

FORBES: Google Glass V2 Could Be Binocular, And Even Double As Stealth Hearing Aids

Chuck graduated from the Illinois Institute of Technology with a degree in mechanical engineering 60 years ago and went to work for a large manufacturer designing hydraulic valves.

FORBES: The 86-Year-Old Startup Guru

But for the most part, large power plants cannot shutdown for just one hour as there are thermal and mechanical concerns that put the plant at risk of being damaged for doing so.

FORBES: Moving Beyond The Symbolism Of Earth Hour