Vtg antique Abney Hand level with no marking measaures slopes grades and heights

Specifications

The Abney hand level was invented around 1870 by Sir William Abney and used to measure slopes grades and heights... this abney in unmarked and believed an early model ( perhaps 100 plusYrs) ... it shows signs of years of use but is still functional /the leather case is in poor condition but still used to protect the instrument. It would make a fine specimine item yet still usable today for it's design to measure slopes grades and heights.

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