Essilor Blocal lens holder

This centering device with eyepiece is compatible with all types of lens holder available today. The block or suction cup is easily positioned on the instrument. Clamping the lens is done by simply depressing the eyepiece. The decentration can be accurately checked thanks to vertical and horizontal scales on the protractor. Multifocal features are also represented. Checking that the lens will cut out can be quickly carried out by direct comparison with the former.