A rare and early nicely patinated lacquered brass miners drainage level (clinometer) by the Glasgow maker, John Gardner and Co.  The company was established in 1773 and operated from its 21 Buchannan Street premises from 1839 until 1860.  This particular instrument most likely dates to the mid 1850s.  It is nicely engraved to the scale arm 'Gardner & Co, 21 Buchanan Street, Glasgow, Registered No 2603, December 28th 1850.'   The fitted case bears a service label for John Cail of Newcastle upon Tyne, trading at its 21 Grey Street address from 1855 until 1865.  The instrument measures 35-40cm long (focusing being achieved by withdrawing the eyepiece) and stands 13cm high.   It survives in good working order with nice crisp optics and cross hair intact.  

Condition: Brass with age-related patination.  Optics clear and without damage.  Reticle intact.  Spirit level intact.  Elevation adjustment operating correctly.  Fitted case with normal wear and tear, knocks, scratches etc.  Paper service label to the inside.   

Overseas buyers are most welcome, but are advised that import taxes may apply.  Please be assured that this item will be very carefully packaged and will be promptly dispatched.  For similar items, please visit my eBay shop and subscribe if you would like to receive notifications and offers.  Many thanks for looking.