<div style="text-align: justify;">The substage 'ST-12' is purposed for use with simple biological microscopes. It serves to move a specimen along two orthogonal axles.<br /><br />The substage scales allow to determine position with 0.1mm accuracy that makes easy to find marked places again.<br /><br />The substage has a base with alignment pins to mount it onto a microscope stage. There are also mechanisms for a specimen moving.<br /><br />Lengthwise movement is accomplished by means of a screw that moves the specimen holding arms (static one and spring-loaded one).<br /><br />Lateral movement is accomplished by means of a rack-and-pinion mechanism.<br />It is possible to use standard slides (30x75mm).<br /><br /></div> <p>Very good condition, though horizontal axis is a bit stiff and will benefit from re-lubrication.</p>