Neutral-density optical filter
Lattice Electro Optics
Surface Polish:Commercial polish
Surface Quality:80-50 scratch-dig
Clear Aperture80 % of central dimension
Size: 0/-0.020" for 1"diameter
0/-0.032" for 2"diameter
or 2"x2" square
Optical Density Tolerance:±10% of density @546.1nm
