noun
field notebook; surveying notebook
A notebook used outdoors for recording observations, measurements, or survey data. Common in contexts like forestry, civil engineering, and field research.
測量のときは野帳にデータを書き込む。
During surveying, I write data in a field notebook.
野帳は雨に濡れても大丈夫なように防水加工されている。
The field notebook is waterproofed so that it's okay even if it gets wet in the rain.