Vitruvian Man (canon of proportions). Drawing created by Leonardo da Vinci based on the ideal human proportions described by Vitruvius. Le Modulor, scale of human proportions devised by the architect Le Corbusier. Dwg file format.
Cad block of rebar (steel bar, steel rod, reinforcing bar, reinforcing steel, reinforcement steel or deformed bar) for tensioning device in reinforced concrete or reinforced masonry structures. Dwg file format.
Cad Blocks of different types of screws (tapping, drywall, wood screws). Detailed plan and elevation with different types of head (oval, flat, hex, round) and common drive types (slotted, Phillips, Hex, Quadrex). Dwg file format.