Okay, I don't have enough time right now to post the entire tech of my world, I will make this ongoing. I'll start with weaponry.
Spears: There are several variations of spears: pikes (8-10 ft. long), spears (5-7 ft. long), javelins (4-6 ft. long), and bills which are a unique type with a 4-5 ft. long shaft with a 1 or 2 ft. blade like that of a machete on the end. Pikes are used for horse combat or infantry. Spears are the same. Javelins are built light specifically for throwing and are often simply wooden sticks that are sharpened; they have points on both ends. Bills are made for hacking and slicing and are used only by an elite corps in the Tanguan army.
Swords: Swords also have several variations: sabers (3-4 ft. curved blades), long swords (4-5 ft. long), and short swords (about 2 1/2 ft. long). Their purposes seem kind of obvious.
Bows: Longbows, crossbows, recurve bows, etc. are not changed from what they would be in our world. There is one difference though, there is a small bow, typically used by assassins and the like, known as the quarrelbow. It is shaped like a crossbow and its size depends on what the user wants, usually between 6 and 10 in.
Knives: There are two types of knives, excluding kitchen knives, long knives and assassin knives. Long knives are anywhere from 2 to 2 1/2 ft. long. Assassin knives are 6-9 in. long and look like a dagger cut in half lengthwise with a jagged edge. Long knives are often used for one-on-one combat, but are also used in battle scenes occasionally. Assassin knives are used by thieves and assassins.
Dagger: self-explanatory
Maces: There are three different types of maces: the spiked mace, the blunt mace, and the flail. The Spiked mace is about 2 1/2 ft. long. the end is a sphere which is covered in spikes. The blunt mace is the same length with either a sphere without spikes on the end of it. The other form of blunt maces is hard to describe, so here is a picture.
http://en.wikipedia.org/wiki/File:Maza_de_armas.jpg Flails are a metal pole of about a foot attached to a chain which is attached to a smaller spiked metal sphere. All of these are used for smashing and denting armor.
Axes: There are three different kinds of axes: halberds, hatchets, and battle axes, which have two different variants. Halberds are just a small axe head on a metal pole that tapers to a point just above the axe-head. They range from 5-10 ft. long. Hatchets are small axes, 1-2 ft. long, that are often used for throwing. Battle axes can either be double-bladed or single-bladed. They are both anywhere between 3-4 1/2 ft. long and double-bladed axes can be as much as 3 ft. across. Halberds can be used by cavalry or spear men and are especially useful for fortress defense. Battles axes are best in the thick of combat.
Hammers: Just big sledgehammers used for smashing like the blunt mace.