Abney level
Sold
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.
Related products
Wronght iron pair of dividers, early18th century
On applicationClinometer
€ 240,00