Reference Point Position - Sony BS78 Series Instruction Manual

3-6-4. Reference Point Position

The reference points are positioned at a 50-mm pitch. The reference points for specific measuring lengths
are shown below.
40
33 (1.30")
66 (2.60")
70
48 (1.89")
96 (3.78")
120
50 50
(1.97") (1.97")
146 (5.75")
170
50
(1.97") (1.97")
196 (7.72")
220
50 50
(1.97") (1.97")
246 (9.69")
Deletion of reference point quantity when the reference point is changed or when a vacuum is used is
available as a special specification.
BS78
270
320
370
23 (0.91")
420
50 48
(1.89")
23 (0.91")
50 50
(1.97") (1.97")
50 50 50
(1.97") (1.97") (1.97")
296 (11.65")
20 (0.79")
50 50 50
(1.97") (1.97") (1.97")
346 (13.62")
20 (0.79")
50
50 50
(1.97")
(1.97") (1.97")
396 (15.59")
20 (0.79")
50 50 50
(1.97") (1.97") (1.97")
446 (17.56")
Fig. 3-24
50
48
(1.97") (1.89")
50 50
43
(1.97") (1.97") (1.69")
50 50 68
(1.97") (1.97") (2.68")
50 50 50
(1.97") (1.97") (1.97")
Error ± 1
Unit: mm (inch)
93
(3.66")
17
(E)