日本工业标准_JIS B7913-2007 Optics and optical instruments-Ancillary devices for geodetic instruments-Tribrachs_B 7913 2007 1 ?QUV wFx|j=Ot,nMo|?j*qw?&o|&A?GUMh?FpK? Mtphlox|?FqMFqw0z|MFt?h?FwRt|?F?,thMFj?w?0?tb?h?t| ISO 12858-3: 2005| Optics and optical instruments Ancillary devices for geodetic instruments Part 3: Tribrachs ?,qo;Mh wFwU|?V|Z&?w?Z&|;?VxZ&?w;?JZ&tb?DQUK?qt?Ib?&A?Gt|?j*qx|w?Os?V|Z&?w?Z&|;?VxZ&?w;?JZ&t?tmMo|yx?hsM JIS B 7913 tx|tbUK? A ? W TjFwGOt|) 1 ? JIS q0 b?MFqw0z B 7913 2007