Marked "8748/Stanley, Great Twinstile Holborn London." on the left side, with horizontal and vertical spirit levels, a 360 degree marked compass, and a trio of leveling devices on the base. With a hardwood storage case, a pair of repair receipts dating to the 1920s, and a spare rear lens.

Very good, with mild external wear. Both spirit levels are intact, the compass is fully functional, and the optics are crisp.