Survey Layout Use: This surveying prism assembly gives field teams a compact prism head and bracketed body for survey alignment, railway layout, and tunnel layout tasks Size Diagram: The size diagram shows an overall height near 90 mm and a 60 mm prism diameter, helping teams review fit, mounting space, and prism scale before setup Single Assembly Pack: The package includes a prism assembly for replacement needs, bracket mounting plans, and day to day field layout preparation across measurement jobs Field Setup Use: Use this compact prism assembly in surveying, engineering layout, railway measurement, or tunnel survey jobs where a clear prism position matters on site Bracketed Prism Body: The circular prism head, side knob, and bottom mounting hole a compact setup that is easier to place on supports during field layout work, Manufacturer: Mekalero