Vectores de square

Circular machine case

Ornamental spoked wheel

Twin disc grinding machine

Sectioned shaft coupling

Sectioned bearing and pulley

Radial cylinder wheel

Hand printing press

Circular knitting machine

Weight testing machine

Sectioned bevel gearbox

Typewriter

Platen printing press

Sectioned rack jack

Four way rotary valve

Hydrant in section

Pressure gauge

Horizontal engine cylinder

Corrugated bellows cylinder

Sectioned roller bed

Lifting jack on a bed

Hopper feed grinding machine

Bumblebee with spread wings

Arrow-shaped fern fronds

Fern spore spike

Lobed pollen grain

Pollen grain with polygons

Pollen grain with two furrows

Spiny round pollen grain

Pinnate herb in flower

Toothed-leaf herb in flower

Nettle stem

Broad ribbed leaves

Bramble leaves

Hemp leaf

Seed pods along a stem

Lance-leaved branch

Ivy with berries

Pinnate branch with berries

Fern frond

Rooted leaf rosette

Field mushroom with a ring

Spotted toadstool with a ringed stem

Tomato with leaves

Human skull in profile

Skull seen from the front

Skull with sutures

Creature with branching arms

Mourning notice card

Feathered crystal field

Fan shaped crystal bursts

Crystal field with a fan

Crystal blades in a field

Field with round bubbles

Crystal field with dark lumps

Star shaped crystals

Crossed crystal blades

Scattered crystals in a field

Four stacked spheres over a landscape

Bound sheaf standing

Flowering plant in a pot