This plumb bob level might look clunky next to a level with a bubble vial, but back in the day this may have been the only type of level you could make yourself, unless you had moderate glassblowing skills. Union Hill Antique Tools markets this particular level as “one of the great super-rare levels of the world. A Bradford Union Patented Cast Iron Inclinometer, Bradford PA. 18 inches long. Best one of 2 known.”
You can own this antique level for the price of a bulldozer, $15,000. Or, if you’re just looking for a good DIY project or a conversation piece, you could probably save a little money by making one yourself.
Bradford Level [Union Hill Antique Tools]