All good things come in a small package! Features Optional Models: ODM-1000A A-Biometer only ODM-1000P Pachymeter only ODM-1000A/P A-Biometer/Pachymeter Accurate Measurement with both Immersion & Contact Modes Extremely Easy to Use Portable & Sleek Design Auto/Manual Modes Auto Gain Control Built-in Thermal Printer Clinical Accuracy: ±0.1mm Data with Graph Printout Specifications A-BIOMETER (for ODM-1000A & ODM-1000 A/P) Probe: 10MHz with Fixation Red Light Total Gain: 90dB with an adjustable range of 0~32dB Biometry Accuracy: ?±0.06mm Resolution: 0.01mm Measuring Range: 15 ~ 39mm Measuring Mode: Contact, Immersion Measuring Parameters: Anterior Chamber Depth, Lens Thickness, Vitreous Length, Axial Length