Vectores de engrave only

Sectioned bearing and pulley

Radial cylinder wheel

Twin frame punch machine

Hand printing press

Weight testing machine

Geared road machine

Sectioned bevel gearbox

Ring geared turntable press

Wood moulding machine

Belt driven shaping machine

Platen printing press

Hopper fed toothed roller

Wheeled pile driver

Four way rotary valve

Hydrant in section

Twin dial gear head

Horizontal steam boiler

Horizontal engine cylinder

Sectioned roller bed

Line shaft and pulley drive

Geared drum machine

Screw press with gauge

Lifting jack on a bed

Suspended cylinder with chain

Hopper feed grinding machine

Flywheel machine

Skull lying on its side

Shaded skull in profile

Foxtail grass with blade

Grass with branched panicles

Tufted grass with slim panicles

Grass with spreading panicle 01

Tufted grass with knobbed spikes

Brome grass with drooping spikelets

Grass with drooping oat panicle

Sprawling grass with thin spikes

Reed with feathery plume

Triangular feathery frond

Sparse pinnate fern frond

Lacy fern frond

Spreading lacy fern frond

Toothed pinnate fern frond 01

Bushy feathery fern frond

Narrow feathery fern frond

Curving ladder fronds

Ladder-like fern fronds

Long pinnate fern frond

Upright pinnate fern frond

Pointed pinnate fern frond

Arching pinnate frond

Pinnate fern frond 01

Hanging ladder fronds 01

Slender lacy fern frond

Tufted fern with round pinnae

Lacy fern clump with roots

Tuft of small fern fronds

Small feathery fern plant

Slender fern frond

Pair of finely cut fronds

Small delicate fern frond