... 5 12.25 10-13 10-13 4-6 WZDS-2575 100 200-400 2.5×7.5 Y225M ... 20 12.25 10-13 10-13 4-6 WZDS-2690 100 300-500 2.6×9.0 Y225M ... 20 12.25 10-13 10-13 4-6 WZDS-3175 100 350-600 3.1×7.5 Y250M ... 20 12.25 10-13 10-13 4-6 WZDS-2560 100 200-350 2.5×6.0 Y225M ... 20 12.25 10-13 10-13 4-6 WZDS-3090 100 400-600 3.9×9.0 ... 20 12.25 10-13 10-13 4-6 WZDS series Biaxial self-synchronization elliptical(linear)same thickness screen ...