
A telescoping lockout device for encasing a gate valve, electrical connection, or similar apparatus, for the purpose of preventing unauthorized access and tampering with the apparatus. The lockout device is comprised of two nested half cylinders attached to one another through T slot that provides for telescoping of the device between an open position, where one half cylinder is nested within the other, and a closed position, where the half cylinders form a cylinder. The T slot provides a rail o...











