They are intended for electrical probing of chips, but I'm planning on using mine for insect attachment and fine positioning of subjects under. the microscope.
80 tpi for 5 micron resolution and 0.5 X 0.5" scanning area.
These are old but in good shape and I've confirmed that the threads are all smooth and operational. These are typically $400 to $800.00 used on eBay I'll list these soon for $100.00 OBO on eBay.
If anyone is interested I'm asking $50.00 per unit plus $25.00 shipping to USA Canada and whatever cost shipping elsewhere. I've also got o third unit that has XY position only that is $40.00 if anyone is interested.
They are magnetic base.
