Schoolhouse Clock Stencil This stencil makes adding your clock face a snap! Schoolhouse Clock Stencil This stencil makes adding your clock face a snap! Clock Dimension: 10 Use chalks, ink, or paint to make your projects come alive. Use with Repositionable Stencil Adhesive - Tack it Over & Over for easy adjustments and application! Use chalks, ink, or paint to make your projects come alive. Use with Repositionable Stencil Adhesive - Tack it Over & Over for easy adjustments and application!