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: 250729/c Category: Surveying
Torpedo levels€ 45,00