This standard stipulates the procedures for framing pictures, the reduction ratio and the requirements for overlapping frames. This standard applies to the shooting of special and oversized patterns (see Appendix A for size series).
GB/T 17739-1999 history
2008GB/T 17739.4-2008 Microfilming of technical drawings and other drawing office documents.Part 4:Microfilming of drawing of special and exceptional elongated sizes
1999GB/T 17739-1999 Micrographics--Microfilming of drawings of special and exceptional elongated sizes