CECIL E. HANSON COLLECTION
ANTIQUE SURVEYING INSTRUMENTS

AMERICAN TRANSITS

John W. Harmon - Boston, MA

Serial Number:
Peep Sight Length: 9-3/4"
Peep Sight Level Bubble Tube Length: 4-1/4"
Diameter of Horizontal Circle Graduations: 4"
Needle Length: None
Diameter of Vertical Arc: None
Height: 4-1/4"
Weight:
Box: Yes - Wooden
Condition: Good+
Found:
CEH Inventory# T41
Instrument is mounted on a tripod head which lists patents dated 11/3/1880, 1/23/1883 and 7/17/1883. John W. Harmon was in business until 1907, indicating this instrument was made between 1883-1907 - i.e. ca. 1900.