CECIL E. HANSON COLLECTION
ANTIQUE SURVEYING INSTRUMENTS

AMERICAN ALIDADES

Serial Number: 20788
Type: Telescopic Alidade
Base Length: 21"
Base Width: 3-1/2"
Height: 9-1/2"
Telescope Length: 17"
Telescope Lens Diameter: 1-1/2"
North Needle Length: 4-1/4"
Weight: Instrument only - 8.3lb; Box + Instrument + Accessories - 17.2lb
Condition: Very Good
Wooden Box: 23" x 11" x 6"
Found: Used by Los Angeles Flood Control District. Obtained in Sierra Madre in 1972
CEH Inventory# A3