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A five-digit, gear-driven totalizer which is ideal for use with measuring wheels. Available in three popular geared ratios, its double-ended shaft can carry two measuring wheels for extra grip and stability in contacting measured material. It is commonly... More
Product introduction: J981 one wheel walking meter is a widely used measuring meter, it is mainly to measure the length of road, land ect.This model has five digit, can measuring 1-9999.9 meters. the aluminum handle can pull out and up to 90cm, with fine... More
Resistance (Coulter) Particle Counters work on the principle of aperture technology, which is also called Coulter Principle. As is illustrated in the picture below, a tube with an aperture is immersed in a container of electrolyte with suspended... More
