2
PR
EP
AR
A
T
ION
2-8. Face-1/Face-2
Measurement
Face-1 Measurement: Measurements made with the vertical circle positioned to
the left of the telescope eyepiece
Face-2 Measurement: Measurements made with the vertical circle positioned to
the right of the telescope eyepiece
NOTE
•
Be careful not to catch your finger in the opening between the
instrument’s standard and the telescope when rotating the telescope.
•
Mechanical constant error (except a few errors such as vertical axis error) can be
effectively cancelled out by averaging the values in Face-1 and Face-2.
Face-2 measurement
Face-1 measurement
2-14
Содержание DTM-502 Series
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Страница 32: ...3 3 Lumi guide see p 3 31 Lumi guide OFF Lumi guide ON 4 Sound Sound OFF Sound ON 3 6 ...