Back Vertex Distance Gauge & Calculator

Back vertex distance gauge 

Product ref: EYOBVDGP

* Accurate
* Very easy to use
* Compensated for eyelid thickness
* Stays open where you measure
* Includes protective pouch
* Easy to read
* NZ made

Back vertex distance calculator

Product ref: EYOBVDCC

* Simple to use
* Easy to handle
* Easy to read
* Accurate results
* Includes protective pouch
* Minus powers marked in Red
* Plus powers marked in Black
* Easy to turn dial
* Instruction on back of gauge with examples
* Essential in every practice

Overall diameter: 150mm(6")

Click here for a copy of the instructions

Back vertex distance gauge & calculator set

Product ref: EYOBVDGPC