Check the listing for details. 1960'S HOPPY MODEL G2 SPLIT IMAGE TRANSIT CALIBRATION SYTEM. Condition: Used. Listed at 24.95 USD. This vintage Hoppy Model G2 transit calibration system from the 1960s is a must-have for any collector or surveying enthusiast. With its split image design and high-quality construction, it is perfect for measuring angles and distances with unmatched accuracy. Whether you're working in construction or simply enjoy collecting unique pieces of history, this transit is sure to impress. The Hoppy Model G2 features a durable construction that is made to withstand even the toughest conditions. Its split image design allows for quick and easy measuring of angles and distances, while its precise calibration ensures that each measurement is accurate and reliable. Don't miss out on the chance to add this rare and collectible transit to your collection today.