Abney level


This surveying instrument consists of a telescope and a adjustable tubular spirit level, which is connected to a semicircular scale and vernier marked in both slope and degrees (90 degrees). A brass rotating gear is used for fine adjustment of the bubble, a magnifier helps a quick reading of the vernier. Made by ‘ross’ london in tje first part of the 20th century. 13 cm long.

SKU: 00 250729 C S Category:

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