(Source: r-u-i-n-o-u-s, via hauntedvip)
Robertson’s crew drive patent application.
A Robertson’s crew drive, also known as a square,or Scrulox screw drive has a square-shaped socket in the screw head and a square protrusion on the tool.
Peter Lymburner Robertson invented the Robertson screw and screwdriver in 1908 and received patents in 1909 (Canada) and 1911 (U.S. Patent 1,003,657)
(Source: lucienballard, via scientificillustration)
(Source: colombadoro, via workman)
Green Tara - Joseph Skala
Drawn by Dave Stevens
(Source: deadair, via thecenturiestocome)
Bridget Riley, Untitled (Study for Blaze), 1962 Pencil on paper
(Source: 7while23, via lullabyforghosts)
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(Source: prck, via se-mefier)
Fra Angelico,The Annunciation (details)
(Source: c0ssette, via grandeodalisque-deactivated2014)
(Source: twitter.com, via napred)