Patent ID: 7908754

Claim:
A dual-level linear marking apparatus that enables a single worker to snap a marking line comprised of: a substantially linear housing forming at least one substantially planar surface comprised of a square tubular body, and at least one internal channel parallelly positioned to said substantially linear housing; a reservoir containing a marking material, said reservoir secured to at least one surface of said housing; at least two pulley components parallelly positioned at opposite ends of said housing; at least one tension control component having at least one tension adjustment control adapted to manipulate at least one of said at least two pulley components, at least one horizontal level bubble parallelly positioned within said substantially linear housing; at least one vertical level bubble perpendicularly positioned within said substantially linear housing; a line with no loose ends adapted to receive said marking material, said line secured to each of said at least two pulley components as a continuous loop and mounted to move slidably through said reservoir parallel with said housing.