MineClone2/mods/PLAYER/wieldview/transform.lua

-- Wielded Item Transformations - http://dev.minetest.net/texture

wieldview.transform = {
	["screwdriver:screwdriver"]="R90",
	["screwdriver:screwdriver1"]="R90",
	["screwdriver:screwdriver2"]="R90",
	["screwdriver:screwdriver3"]="R90",
	["screwdriver:screwdriver4"]="R90",
}