CECIL E. HANSON COLLECTION
ANTIQUE SURVEYING INSTRUMENTS

FOREIGN TRANSITS AND THEODOLITES

Dollond - London, England, ca.1830

Serial Number:
Type: Transit
Telescope Length:
Diameter of Horizontal Circle:
Needle Length:
Diameter of Vertical Arc:
Height:
Weight:
Box: No
Condition: Good
Found: November, 1963 - Mexico City, Mexico
CEH Inventory# FT1

Pillar theodolite by Dollond, London. Peter Dollond was the most famous optical instrument maker of his day. His father, John, invented the achromatic lens. Peter took his younger brother, John into his business in 1766. This is a forerunner of the American surveyors transit.