Nikon BR-2A Reversing Ring Quebec Bill 29 the new lens system uses

the new lens system uses two aspherical lenses most effectively to minimize both distortion and chromatic aberrations

If you have sensitive instruments

47" diameter (12mm)

The MB-D15 Multi-Power Battery Pack can be powered either by six AA batteries (Alkaline or Ni-MH or Lithium)

Nikon BR-2A Reversing Ring Quebec Bill 29 the new lens system usesFits between the Nikon AF SLR cameras and lenses to enable reverse mounting of a lenses. It is an inexpensive means of obtaining a relatively high reproduction or macro ratio. The BR 2A also increases the working distance for normal or wide angle lenses. The BR 2A is compatible with lenses that have a 52mm front attachment size.