The Leveling Staff (Tower Ruler) is a professional measuring accessory used with optical levels for surveying and construction applications. Made from lightweight yet durable materials such as aluminum, it provides clear graduation markings for accurate height and distance readings. Extendable and easy to carry, the staff is suitable for both indoor and outdoor use. Designed for optical levels, it ensures reliable results in land surveying, building layouts, and infrastructure projects. OEM & ODM customization, including branding and packaging, is available for global clients.