Ẹrọ yii jẹ apẹrẹ fun idi ti ilana iṣagbesori ti awọn kekere, soro-lati-mu tabi awọn apẹẹrẹ alaibamu ṣaaju lilọ ati didan.Lẹhin ilana iṣagbesori, o le dẹrọ lilọ ati didan ti apẹrẹ, ati tun rọrun lati ṣe akiyesi igbekalẹ ohun elo labẹ maikirosikopu metallographic, tabi wiwọn lile ohun elo nipasẹ oluyẹwo lile.