This Line Ranger optical surveying instrument is an essential tool for precise linear measurements and alignments in the field. Featuring dual right-angled isosceles prisms - one fixed and one adjustable - mounted in a durable red aluminum housing, this instrument enables surveyors to accurately locate intermediate points along straight survey lines. The compact design measures 3.5 inches in height and 1.25 inches in width, making it highly portable. The precision-engineered prism system allows the surveyor to view aligned images clearly through the sight vane, while the adjustable upper prism provides flexibility for various surveying scenarios. The sturdy construction and metallic components ensure reliability during field use. This professional-grade instrument comes with a protective wooden storage box for safe transport and storage. Perfect for surveying professionals and technical applications requiring accurate linear measurements and alignments, this Line Ranger combines precision optics with practical functionality in a compact form factor.