CECIL E. HANSON COLLECTION
ANTIQUE SURVEYING INSTRUMENTS

FOREIGN LEVELS

Troughton & Simms - London, England

Serial Number: None
Type: Dumpy Level
Telescope Length: 15"
Spirit level length: 8"
Height: 8"
Weight:
Condition: Good
Box: Yes
Notes: Focuses, clear image, cross hairs
Found: Purchased from A. H. Hall & Bros., London (Sept. 6, 1966)
CEH Inventory# FL4

CEH Notes: WM Gravatt, an Englishman, is credited with the construction of the first Dumpy level in 1845. It was called "Dumpy" because it was shorter than the first Wye level which was invented in 1745. Estimated it was made in the 4th quarter of the 19th century.