Our kit is a reproduction of a CNR prototype and features scale chain and custom designed and 3D printed parts such as the water level indicator staff parts and sway pipe frame details. The sway pipe is positionable and can be made operational with some creativity. Windows and doors are laser cut and are also accurate. Laser cut shingles are provided for the roof. These kits are very detailed but relatively simple to assemble. A 15 page comprehensive construction manual with 30+ photos comes with each kit.