This standard applies to the design, manufacture and adjustment of reflective prisms (hereinafter referred to as prisms).
GB/T 7660.3-1987 history
2013GB/T 7660.2-2013 Reflecting prisms.Part 2:Characteritics of image rotation
1987GB/T 7660.3-1987 Reflecting prisms--Characteristics of image rotation
GB/T 7660.3-1987 Reflecting prisms--Characteristics of image rotation was changed to GB/T 7660.2-2013 Reflecting prisms.Part 2:Characteritics of image rotation.