We propose two simple devices that allow an object to be moved and its four corners easily observed with a microscope.
■Proposal 1
In this method, choose a material that is softer and slipperier than aluminum.
(e.g., polyacetal (a material suitable for gears used without lubrication, etc.))
■Proposal 2
We suggest the use of a slide table that can be moved in the XY direction.
