Technical Parameter Dial Diameter Dial graduation Φ165mm Using temperature 0°~360° 1°for each grid -25℃~+60℃ Indicating deviation(H=35μT，T=20±3℃) ≤0.5° Half period(H=35μT，T=20±3℃) ≥8.62 S Friction deviation(H=35μT，T=20±3℃) ≤0.09° Main semicircle self heterodyne correcting energy 1°~45° Secondary semicircle self heterodyne correcting energy 1°~6°(magnetic inclination Q=45°) Quadrant self heterodyne correcting energy 0.5°~10° Inclining self heterodyne correcting energy －75~＋75μT Lens barrel flexing range ±10mm Dial image expanding rate ≈2times(original dial graduation) Lighting power supply AC 220V,DC 24V Outline Dimension 20X430X1300mm(Excluding the length of lens barrel) Diameter of mounting holes Pitchrow 420 ApertureΦ16 weight 70kg, including stand