Scientific Devices [Bombay] Private Limited offers In Line Density Meter. Scientific Devices [Bombay] Private Limited is an ISO 9001: 2000 certified company. The In Line Density Meter falls in the category of Pressure Measuring Instruments. The In Line Density Meter is ideal for installation in pipe lines for continuous measurement of density of liquids. This is available in different materials of construction and in screwed or flanged type connection.