To provide a proper replica without fail through an easy operation by applying the constitution that a replica film having a pressure-sensitive adhesive film on one side is pasted to the surface of a specimen.

A pressure-sensitive adhesive tape 4 is bonded to one side of a replica film 2, thereby forming an elastic double structure material. Then, the double structure material is pasted to the surface of a specimen 1 in tightly stuck with several drops of methyl acetate applied thereto. As a result, bubbles, even if trapped between the surface of the specimen 1 and the replica film 2, can be released by pressing the film 2 by use of fingers. At the same time, neither a fingerprint nor damages are left on the replica film 2. Then, the material is dried and the replica film 2 with the adhesive film 4 bonded is peeled off the specimen 1, and the side of the film 2 without the adhesive film 4 is pasted to a base board for microscopic observation. Then, when several drops of methyl acetate is applied, the adhesion of the film 4 disappears and only thee replica film 2 of acetyl cellulose is left, thereby providing a replica in a proper transcription state.