Easy Measurement: The telescopic tower ruler makes measurement a breeze—no complicated techniques or extra tools needed! The pole features large-sized graduations for easy reading. Scale units: meters Telescopic Measuring Rod: The height measuring rod extends effortlessly to cover heights from compact 20ft to 59ft—no ladders required, saving time and reducing safety risks. When not in use, it retracts to a compact size for easy storage and portability Insulated Resin Pole: This telescoping height measuring poles are constructed from insulating resin material, effectively blocking electrical conductivity for safe use even near electrical equipment. Withstands voltages from 10kv - 110kv Removable Measuring Hook: This height measuring stick features a measuring hook for enhanced flexibility. It can be mounted at the top of the rod to easily measure distances at elevated locations Application Scenarios: Suitable for power line clearance inspection, tower antenna alignment, bridge height verification, as well as measuring tree height, wire height, ceiling height, and stake dimensions, Manufacturer: LZMZMQ