Frontofocómetro manual

Internal reading
l 25d measurement
l Wide field of vision observation
Range of measurement：
　 Minimum scale value：
－25d～＋25d
－5d～＋5d：0.125d；
－5d～－25d、＋5d～＋25d：0.25d
Astigmatism axis angle of cylindrical lens：
0～180 Minimum scale value 1
Prism degree：
Model a 0～5△ Minimum scale value 1△
Model b (with prism compensator)
0～20△ Minimum scale value 1△
Prism basal angle：
0～180 Minimum scale value 1
Range of ocular visibility adjustment：
－5d～＋5d
Size of measured lens：
φ16～Φ80mm