Under the original rules, most of this armor was permitted; the arcana rules decided that the thief who wears no armor should be bonused in particular ways, and that certain types of armor would result in penalties on some skills. Looked at the other way, thieves are better than the original tables show, but various types of armor impede their skills. However, thief skills are still possible wearing any of these types of armor:
Elfin Chain Mail
Leather Armor
Padded Armor
Studded Leather Armor
There is also a short list of weapons available:
Short Bow
Caltrop
Club
Hand Crossbow
Dagger
Dart
Garrotte
Knife
Sap
Sling
Broad Sword
Falchion Sword
Long Sword
Short Sword
The rules also permit a thief-acrobat two additional weapons. These weapons are considered appropriate equipment to the tasks of the acrobat as distinct from the thief. Under MyWorld rules, a thief must qualify for the thief-acrobat split class at the time he reaches the level to do so (level six), and is in every way a thief prior to that, except that the player may envision the character as a future acrobat, and the character may so envision himself. Thus MyWorld does not allow a thief to begin with acrobat weapons. However, other DM's may regard the thief-acrobat as a distinct class from the beginning, and so allow the selection of these weapons at level one:
Lasso
Quarter Staff
Return to Step 10 at the proficiencies count for the Thief or Thief-Acrobat.
The site which inspired this site....
The best new role playing game....
A consideration of time travel....
Other writings by the author....
For your added enlightenment....