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A trimming stage for stereomicroscopes.

Scott and Thurston (1975) have described a simple, useful modification of ultratome specimen holders which permits transillumination of plastic embedded specimens for hand trimming.1 We have refined their original concept by fabricating a Lucite chuck-mounting disc which, in addition to allowing transillumination of embedded specimens, may also be rotated 360 degrees for specimen orientation or locked in place in any desired trimming position. When used in circular stage mounts of stereomicroscopes such as the Nikon SMZ-10, the disc transforms the microscope into a highly effective trimming instrument.