noun
specimen page; sample layout
Used in publishing and printing for a sample page showing the planned layout, typography, and design before full production.
編集者に見本組みを確認してもらった。
I had the editor check the specimen page.
組み版 is the broader process of typesetting and page makeup; 見本組み is the resulting sample page.
Compound of 見本 (sample) and 組み (typesetting, composition).