pd meter

NH-L8 pd meter Essilor Type Main features: • Cornea reflection light coincidence method is used. • This operates by aligning luminous points on the pupils with the measuring line. •Results are displayed digitally inthe window: Right, PD, Left. •Steps: 0.5mm. •Monocular and binocular PD are measurable. •Automatic power shut-off in one minute after operation is completed. Specifications: Range of measurement: 50-80mm(Total) in 0.5mm steps, 25-40mm(Each) in 0.5mm steps Display: Liquid crystal digital display Fixation target: Green dot on illuminated background Focus range: 30cm to infinity Illumination: LED Automatical shut-off: after one minute of inactivity Power supply: 4.5V DC, 3 AAA batteries