Black Friday: lifetime access is on a special offer in the app, until November 30. Black Friday: special offer on lifetime access, until November 30. Download
이 기계는 경사계의 정확한 측정을 제공합니다.I gi-gye-neun gyeongsagye-ui jeonghwaghan cheugjeong-eul jegonghamnida.This machine provides accurate measurements of the clinometric.