The glass in old windows is often the extremely early 'plate' or 'wide' glass to 'crown' or 'cylinder'.[five] Previous glass is recognised by its imperfections ('ream') which lead to optical distortion. In centuries previous, sash windows tended to have won

The glass in previous windows is often the incredibly early 'plate' or 'wide' glass to 'crown' or 'cylinder'.[five] Previous glass is recognised by its imperfections ('ream') which lead to optical distortion. A window sash isn’t only one piece; it&rsq