Establishments primarily engaged in manufacturing totalizing (registering) meters monitoring fluid flows, such as water meters and gas, meters; and producers of mechanical and electromechanical counters and associated metering devices. Establishments primarily engaged in manufacturing electricity integrating meters and electronic frequency counters are classified in Industry 3825, and those manufacturing industrial process instruments are classified in Industry 3823.

• Controls, revolution and timing instruments
• Counter type registers
• Counters, revolution
• Counters: mechanical, electrical, and electronic totalizing
• Electromechanical counters
• Electronic totalizing counters
• Gasmeters: domestic, large capacity, and industrial
• Gasoline dispensing meters (except pumps)
• Gauges for computing pressure-temperature corrections
• Impeller and counter driven flow meters
• Integrating meters, nonelectric
• Linear counters
• Magnetic counters
• Measuring wheels
• Meters: gas, liquid, tallying, and mechanical measuring-except
• Odometers
• Parking meters
• Pedometers
• Positive displacement meters
• Predetermined counters
• Production counters
• Propeller type meters with registers
• Registers, linear tallying
• Rotary type meters, consumption registering
• Speed indicators and recorders, vehicle
• Speedometers
• Tachometer, centrifugal
• Tally counters
• Tallying meters: except electrical instruments, watches, and clocks
• Tank truck meters
• Taximeters
• Totalizing meters, consumption registering, except aircraft
• Turbine meters, consumption registering
• Vehicle tank meters
• Watermeters, consumption registering