Vectores de traced

Wind wheel of box vanes 02

Mill with a turning roof 02

Mill interior with two wheels 02

Wheel set in a brick wall 02

Drum wheel with a spiral diagram 02

Round tower mill with vanes 02

Stream mill against a rock face 02

Watermill under a rock face 02

Mill on piles with a stair 02

Mill on river piles 02

Mill set against a rock 02

Beast treadmill on a sloping ramp

Mill built over a tidal strait 02

Tide mill on a sea wall 02

Floating mill on two pontoons 02

Mill fed by an inclined sluice 02

Mill on a single pontoon 02

Dredge boat with a scoop blade 02

Crossed beam wheel frame 02

Crossed beams floating on water 02

Mill driven by a great wheel 02

Donkey turning a mill wheel

Doorway beside a work bench 02

Weighted crossed linkage 02

Treadwheel mill worked by men 02

Treadmill mill in a walled room 02

Oil mill with an edge runner stone 02

Overshot water wheel with a chute 02

Beam press with a weight 02

Radial vane wheel on a mast 02

Ore broken with a hand hammer 02

Reapers carrying sheaves 02

Salt pans at the shore 02

Grain mill on a shore 02

Flour bolting machine 02

Inclined sieve for grain 02

Stamp mill for pounding powder 02

Hand mill turned by a man 02

Bridge of two beams 02

Shore crane with an inclined beam 02

Wooden arched bridge 02

Lattice truss bridge 02

Stone bridge over a channel 02

Stone arch bridge over a river 02

Arched bridge of metal 02

Flat arched bridge 02

Cable stayed bridge from a tower

Rope suspension bridge over a gorge

Suspension bridge on a curved cable

Single rope crossing with a basket

Jib crane on a river bank 02

Cable ferry across a ravine

Mortars ranged on a sight line 02

Brick vault over a corner 02

Flying man with a canvas parachute 02

Man in a small boat 02

Man on a shore with a float 02

Boat drawn by a line 02

Covered boat on a river 02

Dredging machine on a boat 02