Size 178 mm, Conforming to I.S. Specification Watt’s Pattern, Export Quality fitted with optical plummet and optical parts give Erect image for direct reading. Magnification 25 times. All optical parts are blue coated. The Verniers & circles are 10 sec. accuracy on Pure Silver . Supplied with all standard accessories in wooden box with complete Export Quality aluminum telescopic stand, packed in water proof canvas cover.