Lensmeter Ink Cartridge, Self Inking (3/pack) Pachymeter Probe -Expected lifetime: 6 months -

-Expected lifetime: 6 months - 1 year

Immediate use right out of the box when outside temperatures are cold may cause the vinyl material to crack

and the standard deviation of all measurements taken

Watts: 300

Lensmeter Ink Cartridge, Self Inking (3/pack) Pachymeter Probe -Expected lifetime: 6 months -Marco Lensmeter Ink Cartridges are replacement self inking marking pens for the Marco 101 Non LED Lensometer and Nidek lensmeters. These replacement lens marking pens are supplied in sets of 3 and include replacement retaining C Rings. Please Note: These are replacement parts for newer lensmeters only, which already employ the same pen design. Conversion from older design white plastic pins to these pens requires a conversion kit and re calibration.