| 摘要 |
The invention relates to a rolling device (13a) for measuring the dimensions of an opening in a building for the fitting of a piece of joinery comprising two coding wheels (13, 14) or similar at a maximum, a gyroscope (17) with two axes or similar of 360 DEG at a maximum, an inter-axis (16) of the coding wheels, a simple wheel (15) and an electronic power supply, acquisition, calculation and display unit (18).
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