The USS Monitor is one of my favorite ships of all times and I always wanted a detailed model. While this is only a start I may do a second model even more detailed later. The scale is 1:140 and I have no idea why I made it in that scale. I haven't printed this out yet so I don't know about the tolerances of some of the parts. When printing out parts you need to print 2 of the following parts - Air vents, Anchor sides, Stacks, Cannon and Gun Carriages. Print out 4 of the Gun Carriage Caps. I have also included the Propeller & Shaft in one piece along with the Anchor in one piece. Since my printer won't print them in one piece, I divided them up. The holes along the side of the main deck and turret are for the railings and flag poles.