20X when attached to Theodolite Mark III Series, 18X when attached to NE-100/200 and NE-10 Series, 16X when attached to NE-20H/20S This Nikon High-Power Eyepiece Lens allows you to get

• 16X Mag on the C-100, D-50, DTM-300/310, NPL-302 Series, NPL-350/820/821.
• 17X Mag on the DTM-330/350.
• 18X Mag on the DTM-A, DTM-400/700/800 and Nivo C/M Series.
• 21X Mag on the DTM-302 Series, DTM-500/501/502/652/801, NPL-632, NPR-302 Series.