ScubaSpec Mask Prescription Insert 137 EBP

The 137 EBP Scuba Spec, or Snorkel Spec, is a prescription spectacle insert specifically designed for the visually deficient diver. The 137 EBP Scuba Spec attaches to the mask faceplate via a suction cup and can be easily inserted or removed from the mask at the diver’s discretion. The same prescription powers used in the diver’s habitually worn glasses can be used in the Scuba Spec insert (single or bifocal vision).

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A: distance across center of lens = 42.6 mm (1.68 in)
B: height from top to bottom of lens = 47.7 mm (1.88 in)
ED: diagonal measurement of lens = 51 mm (2 in)
DBL: length of bridge = 30 mm (1.18 in)
HT: height of frame (including anchor bracket) = 50 mm (1.97 in)
L: length of frame = 120 mm (4.72 in)
C: diameter of suction cup = 32 mm (1.26 in)
Circ: circumference of lens = 148.3 mm (5.83 in)
Wt: weight of insert without lenses = 5.7 g (0.2 oz)