The glass in previous windows is often the quite early 'plate' or 'broad' glass to 'crown' or 'cylinder'.[five] Old glass is recognised by its imperfections ('ream') which cause optical distortion. B – sash twine. Every sash is linked to a sash cord that's attached to your side in the sash and fed https://subhashk925opo9.blogsidea.com/profile