Trident Water Meter

This is a disc water meter with frost proof bottom and serial number 60,777 that fit a ⅝” pipe, and that was made in the late 1890s by the Neptune Meter Company. The bronze case is marked “TRIDENT” and “60777.” The top of the cap is marked “NEPTUNE METER COMPANY NEW YORK 39291.” The inside of the cap is marked “PATENTED MAY 21, NOV. 1, 1892, FEB 6, MAY 22, 1894, MAR 12, 1895, SEP 29 ‘96” and “60777.” The firm was founded in 1892. Its original product, the Trident, was based on designs patented by John Thomson, a prolific inventor and member of the American Society of Civil Engineers. Neptune boasted in 1903 that “Nearly 165,000 Tridents” were then in use.
Ref: Neptune Meter Company, The Trident Water Meter (New York, 1895, 1901, 1903).
Object Name
water meter
date made
late 1890s
Neptune Meter Company
Physical Description
brass (overall material)
overall: 8 5/8 in x 7 1/2 in; 21.9075 cm x 19.05 cm
place made
United States: New York, Queens, Long Island City
ID Number
accession number
catalog number
See more items in
Medicine and Science: Physical Sciences
Measuring & Mapping
Water Meters
Natural Resources
Data Source
National Museum of American History, Kenneth E. Behring Center
Credit Line
A.A. Hirsch

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