Talaria

"Talaria  are winged sandals, a symbol of the Greek messenger god Hermes (Roman equivalent Mercury). They were said to be made by the god Hephaestus of imperishable gold and they flew the god as swift as any bird. The name is from the Latin talaria, neuter plural of talaris, "of the ankle"." Soruce: Wikipedia

Cap of Invisibility

"In classical mythology, the Cap of Invisibility is a helmet or cap that can turn the wearer invisible. It is also known as the Cap of Hades, Helm of Hades, or Helm of Darkness. Wearers of the cap in Greek myths include Athena, the goddess of wisdom, the messenger god Hermes, and the hero Perseus. The Cap of Invisibility enables the user to become invisible to other supernatural entities, functioning much like the cloud of mist that the gods surround themselves in to become undetectable." Source: Wikipedia

Hephaestus

Hephaestus was the Greek god of blacksmiths, craftsmen, artisans, sculptors, metals, metallurgy, fire and volcanoes. As a smithing god, Hephaestus made all the weapons of the gods in Olympus, and even robots. Hephaestus's symbols are a smith's hammer, anvil, and a pair of tongs.
Hephaestus is given many epithets.
Amphigúeis “the lame one” (Ἀμφιγύεις)
Kullopodíōn “the halting” (Κυλλοποδίων)
Khalkeús “coppersmith” (Χαλκεύς)
Klutotékhnēs “renowned artificer” (Κλυτοτέχνης)
Polúmētis “shrewd, crafty” or “of many devices” (Πολύμητις)
Aitnaîos “Aetnaean” (Αἰτναῖος), owing to his workshop being supposedly located below Mount Aetna.

Some of Hephaestus' ArteFacta:
Hermes' winged helmet and sandals
Aegis breastplate
Achilles' armor
Helios' chariot
Eros' bow and arrows.
Hephaestus' automatons of metal to work for him.
Tripods that walked to and from Mount Olympus.
Prometheus stole the fire that he gave to man from Hephaestus's forge.
The thrones in the Palace of Olympus.

"Hephaestus’s ugly appearance and lameness is taken by some to represent arsenicosis, an effect of low levels of arsenic exposure that would result in lameness and skin cancers. In place of less easily available tin, arsenic was added to copper in the Bronze Age to harden it; like the hatters, crazed by their exposure to mercury, who inspired Lewis Carroll's famous character of the Mad Hatter, most smiths of the Bronze Age would have suffered from chronic poisoning as a result of their livelihood. Consequently, the mythic image of the lame smith is widespread." Source Wikipedia

Antikythera mechanism

Antikythera is a Greek island. It is known for being the location of the discovery of the Antikythera mechanism and for the Antikythera wreck, a shipwreck from the 1st or 2nd century BC. It was discovered by sponge divers in the early 1900s. The wreck produced numerous statues and a mechanism, considered as the world's oldest known analog computer.
In October 1900, a team of sponge divers led by Captain Dimitrios Kondos began diving off the coastline of Antikythera island. At that time, divers wore as diving equipment a canvas suit and copper helmet, which allowed them to dive deeper and to stay submerged longer. "The first to lay eyes on the shipwreck 60 metres down was Elias Stadiatos, who quickly signaled to be pulled to the surface. He described the scene as a heap of rotting corpses and horses lying on the sea bed. Thinking the diver had gone mad from too much carbon dioxide in his helmet, Kondos himself dove into the water, soon returning with a bronze arm of a statue." more Wiki.
On 17 May 1902, archaeologist Valerios Stais made the most celebrated find. He was diving to search the area of the wreck and noticed that one of the pieces of rock near him had a gear wheel embedded in it. He found what is now known as the "Antikythera mechanism".

Il meccanismo è un "antichissimo calcolatore per il calendario solare e lunare, le cui ruote dentate potevano riprodurre il rapporto di 254:19 necessario a ricostruire il moto della Luna in rapporto al Sole (la Luna compie 254 rivoluzioni siderali ogni 19 anni solari). L'estrema complessità del congegno era inoltre dovuta al fatto che tale rapporto veniva riprodotto tramite l'utilizzo di una ventina di ruote dentate e di un differenziale, un meccanismo che permetteva di ottenere una rotazione di velocità pari alla somma o alla differenza di due rotazioni date. Il suo scopo era quello di mostrare, oltre ai mesi lunari siderali, anche le lunazioni, ottenute dalla sottrazione del moto solare al moto lunare siderale.Sulla base della sua ricerca, Price concluse che, contrariamente a quanto si era creduto in precedenza, nella Grecia del II secolo a.C. esisteva effettivamente una tradizione di altissima tecnologia." More http://it.wikipedia.org/wiki/Macchina_di_Anticitera and also, a longer discussion, http://en.wikipedia.org/wiki/Antikythera_mechanism

I have prepared the following image, using a picture after enhancement and a schematic view, both from Wiki.