The Disto Classic 4 was a handheld laser distance meter released by Leica Geosystems in the early 2000s. It was an innovative tool for its time, providing a major step up in speed and precision compared to a traditional tape measure. The Classic 4 is no longer a current model and has been succeeded by more advanced devices in the Leica Disto lineup. Key features Measurement functions: Provided distance measurement, area and volume calculations, and height measurement using the Pythagoras function. Continuous tracking: Allowed users to determine minimum and maximum distances, useful for finding true room diagonals. Positioning aids: Included an integrated tripod thread and a multifunctional end-piece for measuring from corners and edges with automatic reference detection. Target applications: Designed for a wide range of professionals, including architects, painters, floor installers, and those in construction and engineering. Indoor focus: As a much older model, it lacked modern features like Pointfinder cameras and Bluetooth, making it best suited for indoor applications where the laser dot was easily visible. What to consider when buying a used Classic 4 Since the Classic 4 is an older, discontinued model, reviews from its original release era are difficult to find. Any reviews today are likely for used devices purchased from sites like eBay. Based on user reports, here are the main considerations for a used Classic 4: Reliability: Many users report that these meters, even the older models, are generally reliable. Condition: Look for signs of wear and tear, and confirm that the device, including the display, is in working order. Warranty: Any extended warranty is likely long expired, as noted for a later, but still classic, model. Accuracy: Check the seller's claims against the meter's original specifications. The Classic 4 had a high accuracy for its time, but precision may be an issue with a heavily used or damaged unit. Modern alternatives: Modern Leica Disto models offer significantly more features, durability, and better performance in bright conditions. Newer devices, like the Disto X4, offer Bluetooth connectivity, Pointfinder cameras for outdoor measurements, and compatibility with smartphone apps. Summary: Is the Disto Classic 4 a good purchase? The Leica Disto Classic 4 is a product of its time. While it pioneered many features, it lacks the ruggedness and connectivity of modern laser distance meters. If you need a basic, reliable distance measurer and are on a strict budget, a used Classic 4 might work, especially for primarily indoor use. For professional work or frequent outdoor use, a modern Disto model is a much more robust and feature-rich choice, even if it is a higher initial investment.