BeerBellyBlunt
Variable Compression Engine by Infiniti [8,000 × 10,647]
Source: https://openpics.aerobatic.io/
Pentax K1 Camera and Lens [1400x518]
Source: http://i.imgur.com/fRyJtwW.jpg
Alcoa “Fifty” 50,000 ton forging press
Source: https://imgur.com/SgQ2a
Rivers of fire, tapping a blast furnace at Ural Steel
Source: https://imgur.com/iBFYs3k
Steam #turbine rotors at our Energy plant in Schenectady, NY
(via landscape-1432675837-1-choose.jpg (1600×800))
Mechanical Principles by Ralph Steiner (1930)