·BOSS校准系统                                                   ·免工具磁偏角调整                                                   ·地图子午线                                                     ·放大刻度精度为1°                                                  ·保护壳和瞄准镜                                                    ·绘图和紧急备用的现场参照卡                                            ·3个测斜仪                                                                 · 地图放大镜                                                      ·重量：102g                                                           ·尺寸：10.4x6.34x2cm                                                  ·分辨率：1°                                                         ·标度：英尺，英里，米                                                 ·地图比例：1:24km （通用横向卡托图）                                         ·有限终身保修                                                          ·美国制造