Using this HO scale brass dynamometer car model is simple. Just place it on your model train track to add a realistic touch to your layout. When handling the model, be gentle as it's a fragile item. To maintain its appearance, avoid touching it with dirty hands as this could cause more tarnish. If you notice the tarnish getting worse, you can use a soft, dry cloth to gently wipe the surface. Store the model in its original box and foam when not in use to protect it from dust and damage. When shipping the model, whether it's for a return or moving it, make sure to use proper packing materials to prevent any breakage.