Plate armour in the context of "Gustav I of Sweden"

Daniel Hopfer (c. 1470 – 1536) was a German artist who is widely believed to have been the first to use etching in printmaking, at the end of the 15th century. He also worked in woodcut. Although his etchings were widely ignored by art historians for years, more recent scholarship is crediting him and his work with "single-handedly establishing the salability of etchings" and introducing the print publisher business model.

Unlike most later prints, etched on copper plates, Hopfer's printed etching continued to use the iron plates he was used to working with in steel plate armour, the material he was trained in, and with which he continued to work.

A musket is a muzzle-loaded long gun that appeared as a smoothbore weapon in the early 16th century, at first as a heavier variant of the arquebus, capable of penetrating plate armour. By the mid-16th century, this type of musket gradually disappeared as the use of heavy armour declined, but musket continued as the generic term for smoothbore long guns until the mid-19th century. In turn, this style of musket was retired in the 19th century when rifled muskets (simply called rifles in modern terminology) using the Minié ball (invented by Claude-Étienne Minié in 1849) became common. The development of breech-loading firearms using self-contained cartridges, introduced by Casimir Lefaucheux in 1835, began to make muskets obsolete. The first reliable repeating rifles, the 1860 Henry rifle and its 1866 descendant the Winchester rifle, superseded muskets entirely. Repeating rifles quickly established themselves as the standard for rifle design, ending the era of the musket.

A gambeson (also known as, or similar to where historic or modern distinctions are made, the acton, aketon, padded jack, pourpoint, paltock, haustement, or arming doublet) is a padded defensive jacket, worn as armour separately, or combined with mail or plate armour. Gambesons were produced with a sewing technique called quilting or pourpointing that produced a padded cloth. They were usually constructed of linen or wool; the stuffing varied, and could be, for example, scrap cloth or horse hair.

An arming doublet worn under armour, particularly plate armour of fifteenth- and sixteenth-century Europe, contains arming points for attaching plates. Fifteenth-century examples may include mail goussets sewn into the elbows and armpits, to protect the wearer in locations not covered by plate. German gothic armour arming doublets were generally shorter than Italian white armour doublets, which could extend to the upper thigh. In late fifteenth-century Italy, this also became a civilian fashion. Men who were not knights wore arming doublets, probably because the garment suggested status and chivalry.

A combat helmet, also called a ballistic helmet, battle helmet, or helmet system (for some modular accessory-centric designs) is a type of helmet designed to serve as a piece of body armor intended to protect the wearer's head during combat.

Helmets designed for warfare are among the earliest types of headgear to be developed and worn by humans, with examples found in several societies worldwide, the earliest of which date as far back as the Bronze Age. Most early combat helmets were designed to protect against close-range strikes, thrown objects, and low-velocity projectiles. By the Middle Ages, helmets that protected the entire head were common elements of plate armor sets. The development of firearms, cannons, and explosive weaponry rendered armor intended to protect against enemy attack largely obsolete, but lightweight helmets remained for identification and basic protection purposes into the late 19th and early 20th centuries, when developments in modern warfare saw a renaissance of combat helmets designed to protect against shrapnel, debris, and some small-caliber firearm munitions. Since the late 20th and early 21st centuries, helmets have evolved to protect against explosion shock waves and provide a mounting point for devices and accessories such as night-vision goggles and communications equipment.

A lance rest (French: arrêt de cuirasse or arrêt) is a metal flange or hook that is typically attached to the right side of a breastplate, just under the armpit. The lance rest appeared in the late 14th century, remaining in use until the use of full plate armour and heavy lances became obsolete for general use in the late 16th and early 17th centuries.

The lance rest was used to stop the rearward movement of the weapon upon impact. This allowed the wielder of the lance to create an unyielding platform from which to couch the weapon so that the rider's strong armour absorbed the shock of the impact, thus delivering a more solid blow to his target while lessening the chance of injury to himself. The lance rest achieves this by spreading the impact of a blow through the breastplate to the torso of the wearer, thus redirecting the need for the hand, wrist, elbow, and shoulder of the rider to carry the force of blow through onto the target.

Historically, an armourer is a person who makes personal armour, especially plate armour. Historically armourers were often men, but women could also undertake the occupation: for example Alice la Haubergere worked as an armourer in Cheapside in the early 1300s and in 1348 Eustachia l’Armurer was training her husband's daughter, likely in the field.

In modern terms, an armourer is a member of a military or police force who works in an armoury and maintains and repairs small arms and weapons systems, with some duties resembling those of a civilian gunsmith. The term may also be used in film and TV production for a person responsible for prop guns and other weapons; the head of this function is often called a weapons master.

An atmospheric diving suit (ADS), atmospheric pressure diving suit or single atmosphere diving suit is a small one-person articulated submersible which resembles a suit of armour, with pressure-tight joints to allow articulation while maintaining a constant internal volume and an internal pressure of one atmosphere. An ADS can enable diving at depths of up to 2,300 feet (700 m) for many hours by eliminating the majority of significant physiological dangers associated with deep diving. The occupant of an ADS does not need to decompress, and there is no need for special breathing gas mixtures, so there is no danger of decompression sickness or nitrogen narcosis when the ADS is functioning properly. An ADS can permit less-skilled swimmers to complete deep dives, albeit at the expense of dexterity.

Atmospheric diving suits in current use include the Newtsuit, Exosuit, Hardsuit and the WASP, all of which are self-contained hard suits that incorporate propulsion units. The Hardsuit is constructed from cast aluminum (forged aluminum in a version constructed for the US Navy for submarine rescue); the upper torso hull is made from cast aluminum, while the bottom dome is machined aluminum. The WASP is of glass-reinforced plastic (GRP) body tube construction.