b61-561 GRAVITY INCLINOMETER. Melick Patent. Wooden versions of William Melick's inclinometer are less rare than the cast iron mantleclock version but still uncommon. This is a nice one, with a 24" cherry stock that's immaculately clean, smoothly working mechanism, nickel on metal casing has some light surface corrosion. The unusual feature is that there is no second locking button on the rear of the stock. The second button wasn't part of the patent, and we've seen a couple of prior examples. From the collection of Don Rosebrook. Fine 200-400