The lowest price of Double prism optical square in Bangladesh is Tk 8,500 only. Buy from Dhaka at low price in Bdstall. There is currently 1 seller.
This double-prism optical square is an aluminum land survey tool from China. It features two optical glass pentaprisms. It can be used without a plumb for fast alignment or with a plumb for precise alignment. With an accuracy of ±1cm at 30m, it is useful for surveyors to establish perpendicular lines & check structure alignment. It is suitable for ensuring accuracy in various surveying tasks.