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JAMES SMITH MICROSCOPE STAGE FORCEPS
This forceps has rotational and to-and-fro adjustments.
It was designed to hold a small specimen like a leaf or fly, but a smaller one than the 3-pronged forceps.
It attached by sliding onto a vertical rod at the back of stage. The pointed tip is spring steel and the tips are separated by pushing on the tiny button.
The other end has a cork filling the brass piece, to allow a pinned specimen to be attached.