Marco Lensmeter Marking Pin Holders are replacement parts for the Marco 101 Lensometer. L1-0159 Holders are part of the lens inker or lens spotting assembly in the early model LM101 Marco Lensometer and serve to hold the 3 white plastic pins in alignment when they make contact with the spectacle lens. These holders are reasonably simple to replace and do not usually necessitate recalibration of the lensometer. Replacement Pin Holders are supplied in a set of 3. Please also see commonly replaced lensmeter parts: pins
, springs, and nuts.