Model	Type/purpose	Main features
V-551	Standard	Single Layer (for High Speed)
V-552		Dual Layer (for High Speed)
V-551E1	Eccentric Disc	0µm +10/-0µm, Single Layer
V-551E2		50µm ±10µm, Single Layer
V-551E3		100µm ±10µm, Single Layer
V-551E4		150µm ±10µm, Single Layer
V-551E5		200µm ±10µm, Single Layer
V-552E1		0 +10/-0µm, Dual Layer
V-552E2		50µm ±10µm, Dual Layer
V-552E3		100µm ±10µm, Dual Layer
V-552E4		150µm ±10µm, Dual Layer
V-552E5		200µm ±10µm, Dual Layer
V-551D3	Defect Disc	Black Dots & Fingerprints, Single Layer (Diameter=0.4/0.8/1.2/1.5/2.0mm)(D=65/75µm)
V-552D3		Black Dots & Fingerprints, Dual Layer (Diameter=0.4/0.8/1.2/1.5/2.0mm)(D=65/75µm)
V-551V1	Vertical Deviation	0.4mm(±0.2mm) ±0.05mm, Single Layer
V-551V2		0.6mm(±0.3mm) ±0.05mm, Single Layer
V-551V04		0.8mm(±0.4mm) ±0.05mm, Single Layer
V-551V3		1.0mm(±0.5mm) ±0.05mm, Single Layer
V-552V1		0.4mm(±0.2mm) ±0.05mm, Dual Layer
V-552V2		0.6mm(±0.3mm) ±0.05mm, Dual Layer
V-552V04		0.8mm(±0.4mm) ±0.05mm, Dual Layer
V-552V3		1.0mm(±0.5mm) ±0.05mm, Dual Layer

*Please contact us for details.