Rockwell Water Meter

This is a ⅝” sealed register, magnetic drive disc water meter made by the Rockwell Manufacturing Company. It has a bronze case with a frost proof bottom. Rockwell introduced its sealed register model in 1957, describing it as “the first major advance in water measurement in the past 50 years,” and claiming that the use of a magnetic force to turn the registering mechanisms “eliminates the need for a stuffing box, and makes possible an hermetically sealed register that stays clean, dry, and free from fog.” This example is serial number is 21,000.
Ref: “Rockwell Report,” Wall Street Journal (Sept. 12, 1958), p. 6.
Currently not on view
date made
ca 1970
Rockwell Manufacturing Company
Physical Description
bronze (overall material)
overall: 4 3/8 in x 4 1/4 in x 7 1/2 in; 11.1125 cm x 10.795 cm x 19.05 cm
ID Number
accession number
catalog number
Credit Line
Rockwell Manufacturing Company
See more items in
Medicine and Science: Physical Sciences
Measuring & Mapping
Water Meters
Natural Resources
Data Source
National Museum of American History


Can you tell what year the meter is made by the serial number?
"I do not, unfortunately, have correlations between water meter serial numbers and dates of manufacture."

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