4600 Phase III Ballast Regulator Kit scale:HO Scale 1:87 this represents a Mark II

this represents a Mark II tamper that has been modified to have the laser towers outside and forward of the cab

Tamper Corporation developed the first fully automated tamping machine

Kit includes a one piece body shell

the rear platform railing assembly

4600 Phase III Ballast Regulator Kit scale:HO Scale 1:87 this represents a Mark IIRepresenting the "Phase III" version introduced approximately 2022. Key features include the new cab shape, revised air conditioner, and detailed frame. Kit includes all items to build one ballast regulator. All parts resin 3D printed. Includes operator seat, see through steps, separate wheels, and positionable front blade and rear broom assembly.