The model number is readable, and googling finds the spec sheet is here http://www.optics.arizona.edu/optomech/ ... noroll.pdf
Sounds like a specialized but useful bit of kit, for 75 quid. (uk seller, worldwide ship)Adjustment of the NanoRoll with the UltraFine™ precision
differential drive provides 8 degrees of manual motion and 10 arc
minutes of ultrafine adjustment with a resolution of 1 arc second.
http://cgi.ebay.ie/Melles-griot-stage-m ... 0522116621
No connection with or experience of the seller, this just turned up in an ebay search.
