Leveling Board , Leveling Table for Resin Craft, Stackable Boards, 2 Direction Spirit Level - Etsy
Amazon.com: OMPERIO Resin Leveling Table for Epoxy Resin, 23.5'' x 15.5'' Adjustable Leveling Board for epoxy Resin, Self Leveling Table with a Tool kit for epoxy Resin and Acrylic Pouring Tools (Blue)