This authentic I. Sorby spirit level is a fine example of the high-quality tool production that defined Sheffield, England. Measuring 20 x 2 x 2cm, the piece consists of a solid brass top plate mounted to a dense, dark hardwood base. The manufacturer, Isaac Sorby, was a prominent tool maker whose legacy is captured here through the iconic Mr. Punch trademark stamped into the metal. This logo, featuring the classic character with a bag of tools, served as a hallmark of the company's professional-grade ironmongery.
The level is marked with patent 425996, which was likely registered in the mid-1930s. It also bears the "Warranted Correct" stamp, a traditional quality assurance mark. The original spirit vial remains intact with its green fluid. The item is in very good condition and appears to be in working order, though it has not been extensively tested.
This piece would suit a collector of Sheffield industrial history or an enthusiast of vintage woodworking tools.