The unit has two working platforms. The goniometer on left is used to measure a high precision wafer. On right the quartz bar orientated on its R-face is adjusted by a micrometer. The cutting angle is adjusted by the goniometer. This unit is mainly used for AT- or BT-cut. 

Main specification

Items                                                Type 5A/6A                              

Sticking plate size      (mm)                   330 x 200 x 20                      

Crystal bar thickness (mm)                           10, 9 (8, 7)                             

Sticking layer                                                  5 (6)                                                

Layer adjust mode                                         spacer block                                  

Sticking precision                                          +/- 5’’

Display mode of sticking precision            digital and analog, with peak memory function

Cutting angle reading, min.                          1”                                                    

Fix mode of sticking plate                             electromagnet                               

Moving mode of sticking plate                   special precision guide rail         

Mother apparatus                                          Type DX-4A                               

Note:

1 The area of R-face must be big enough for sticking. For a Y-bar it is better to cut off a piece of the bar which is parallel to the large R-face to enlarge the sticking area.

2 It is negotiable if the demand of sticking plate size  and sticking layer is other than listed above.