sash lock การใช้

• Q . Where can I find a sash lock that will hold a window partially open and secure?
• Guerrero found them to be a great source for the decorative bronze and copper sash locks for windows, priced at one third the cost of other sources.
• This led to the establishment of Roto Hardware Systems which started developing its own line of North American specific products, including X-Drive casement window operators, window locking systems, window hinges and sash locks.
• If I'm correct, its too small to be of much use other than a simple locking mechanism, and thus its perhaps a sash lock as talk ) 03 : 00, 23 June 2012 ( UTC)