reference item; specimen for reference
A physical object or material kept for reference, comparison, or as a sample. Often used in business, manufacturing, or research contexts.
この参考品を元に、新しいデザインを検討します。
We will consider a new design based on this reference sample.
図書館の参考品コーナーには貴重な資料が展示されている。
Valuable materials are displayed in the library's reference items corner.