Nanjing-third-class standard metal line scale

Third-class standard metal line scale (aka Geneva feet) is a sophisticated scoring metal thermometer reading with a magnifying glass and ruler. Often used in mapping operation inspection map border points, control the distance between the point and the coordinates of the network at the national level as a standard measurement of the Specification standard ruler ruler for checking purposes. Other professional sectors are also widely used as a measure linear distance measurement and characterization and use. Third-class standard metal line scale as high-tech, innovative new products the twenty-first century China's independent intellectual property rights, the collection of modern technology, fully automated machining centers production technology, using laser engraving scribe line, marked in Fig selected readings type. Products with high accuracy, high stability, high resolution, engraved line width, line spacing precision engraved consistent, the difference between the linear rule curve movements, no sudden jump, peak accidental error value, groove vertical standards, foot stiffness Well, type variable rate, good flatness, the accuracy index is substantially higher than JJG71-2005 standard issued in 2005, with the world advanced level. Instrument Main Specifications: 1, the instrument Dimensions: length 1050mm × width 38mm × height 63mm 2, the instrument weight: 3Kg 3, wooden box dimensions: length 1080mm × width 74mm × height 82mm 4, a full set of weight: about 5.5Kg 5, meters indexing foot length: 1020mm 6, dividing the value of the meter stick: The two ramps are 1mm and 0.2mm (estimable read 0.01mm) 7, magnifier Magnification: 7x 8, dividing the value of the thermometer: 0.5 degrees 9 , not straight edge bevel edge of Michi ≤0.1