- World's largest producer of Model RR Decals! Best viewed at 1024 x 768 resolution Navigation Menu This month's new release is Pennsylvania Railroad Cabooses 1927-1968 Online Catalog is Open for Business . The new Microscale Online Catalog is ready for use. You will be able to search for any decal currently in the inventory. The Search is keyed by scale and roadname with the results displayed in ...www.microscale.com