| 摘要 |
meters for check of petrol pumps taking into account change in volume of light oil products and capacity of meter depending on temperature. SUBSTANCE: reading unit has transparent neck with scale plate having longitudinal inspection slot. Attached to scale plate are temperature scales corresponding to definite working fluid. Device is provided with flat movable scale showing error of meter which is made in form of frame with water gauge glass. Error scale combines capacity scale and tolerance scale. EFFECT: enhanced ease and accuracy of taking reading when various working fluids are used. 1 dwg
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