Propeller Type Water Current Meter With Direct Velocity Indicator Industrial ++

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Propeller Type Water Current Meter with Digital Velocity Indicator for Flow

BRASS CUP TYPE WATER CURRENT METER WITH DIRECT VELOCITY INDICATOR & FISH WEIGHT

Gurley Pygmy Water Flow Current Meter Vintage Scientific Instruments

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Cup Type Water Current Meter Hydrological Water Velocity Measuring Device

Cup type water current meter (field pattern) with direct velocity indicator+