Ancient Roman technology

thumb|From left to right: pastry fork, relish fork, [[salad fork, dinner fork, cold cuts fork, serving fork, carving fork]] In cutlery or kitchenware, a fork (from 'pitchfork') is a utensil, now usually made of metal, whose long handle terminates in a head that branches into several narrow and often slightly curved tines with which one can spear foods either to hold them to cut with a knife or to lift them to the mouth.

cooling of air in buildings or vehicles

thumb|upright=0.65|Schematic drawing of a hydrometer. The lower the density of the fluid, the deeper the weighted float B sinks. The depth is read off the scale A.

thumb|A modern working stirrup on an endurance riding saddle thumb|Typical metal stirrup used in English riding A stirrup is a light frame or ring that holds the foot of a rider, attached to the saddle by a strap, often called a stirrup leather. Stirrups are usually paired and are used to aid in mounting and as a support while using a riding animal (usually a horse or other equine, such as a mule). They greatly increase the rider's ability to stay in the saddle and control the mount, increasing the animal's usefulness to humans in areas such as communication, transportation, and warfare.

thumb|upright=1.2|Wearing sunglasses under direct sunlight: Large lenses offer good protection, but broad temple arms are also needed against "stray light" from the sides.

thumb|Diagram of fireplace hand-bellows Bellows are a device constructed to expel a controlled blast of air. The simplest type consists of a flexible bag comprising a pair of rigid boards with handles joined by flexible leather sides enclosing an approximately airtight cavity which can be expanded and contracted by operating the handles, and fitted with a valve allowing air to fill the cavity when expanded, and with a tube through which the air is forced out in a stream when the cavity is compressed. It has many applications, in particular blowing on a fire to supply it with air.

object used to produce light continuously for a period of time using an oil-based fuel source

thumb|257px|Sawing logs into finished lumber with a basic "portable" sawmill thumb|right|An American sawmill, thumb|Early 20th-century sawmill, maintained at Jerome, Arizona|Jerome, Arizona

small relief carving

iron alloy with a high carbon content

thumb|Composite order|Composite columns of a bookshelf from the [[Bibliothèque Mazarine (Paris)]] thumb|Household bookshelf arranged by color

system to provide warmth to a whole building from one point

thumb|Illustration of a simple three-axis gimbal set; the center ring can be vertically fixed

thumb|upright=1.2|Steel mill with two [[arc furnaces]]

thumb|Ancient Roman urn made of [[alabaster]]

small hollow object made of bronze or stone, with a dodecahedral shape

engineering practice which supported Roman civilization

ancient glass covered by a patina responsible of their iridescent hues of blue, green, and orange

engineering accomplishments of the ancient Roman civilization

thumb|Equipment used by an Ancient Rome|ancient Roman land [[surveyor (gromaticus), found at the site of Aquincum, modern Budapest, Hungary]]

type of water pump

Base-10 portable abacus

mining operation extracting rock salt or halite