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4) With regularly replaced button cell
Installation method: can be installed on the wall hanging bracket
adjustable test distance
*Free shipping does not apply to this product
astigmatism checks
INS-11059 | Lens Ruler Bar Dispensing 4) With regularly replaced buttonClick here to download Manual Lens Ruler Bar model INS 11059. Lens ruler bar is set of retinoscopic rulers being a positive and a negative with 4 convex and 4 concave bars . Set comes in metal case. Sphere: 40 lenses together (5 in each bar) 4 bars for each of concave and convex: 0. 25, 0. 50, 0. 75, 1. 00, 1. 25, 1. 50, 1. 75, 2. 00, 2. 25, 2. 50, 2. 75, 3. 00, 3. 50, 4. 00, 5. 00, 6. 00, 7. 00, 8. 00, 9. 00, 10. 00 Set comes in metal case.