Vertical prism.up:InvLen:Pt:Corrective lens.left:Qn:Lensmeter
vertical prism.up:invlen:pt:corrective lens.left:qn:lensmeter
Vertical prism.up:Inverse Length:To identify measures at a point in time:Corrective lens.left:Quantitative:Lensmeter
vertical prism.up:inverse length:to identify measures at a point in time:corrective lens.left:quantitative:lensmeter