To counterbalance.
Either of two parts that fit together, or complement one another.
One who or that which resembles another.
A duplicate of a legal document.
One who or that which has corresponding functions or characteristics.
Either half of a flattened fossil when the rock has split along the plane of the fossil.
To convert (documents) to microfiche format.
A sheet of microfilm, six by four inches, holding several hundred reduced images of document pages, read using a microfiche reader or microfilm reader.
A device used to magnify and read these sheets.