| 摘要 |
FIELD: packaging. ^ SUBSTANCE: hand level has detachable linear level, bubble tube of which duplicates horizontal bubble tube of hand level, and angle finder for definition of inclined surface angle. Angle finder includes bubble tube located in wheel rim which is rotates by user directly, impressing rotative moment to the part of external circumferential friction face of wheel rim, available through reach-through cutout in top surface of hand level. ^ EFFECT: cost cutting and packaging ease of two items as one. ^ 9 cl, 6 dwg |
