Specifications:

• Range of measurement: 45~82mm(total) in 0.5mm steps,22.5~41mm(each) in 0.5 steps.
• Power Supply: Li-ion batteries
• Origin: CN(Origin)
• Model Number: CP32BT
• Item: Optometry Pupil distance meter
• High accuracy: 0.5mm
• Focus Range: 30cm to infinity.
• Feature: Cell batteries or lith rechargeable batteries
• DIY Supplies: Electrical
• Dimensions: 230x170x62mm
• Brand Name: Optometrial