Measuring apparatus for length measurement, with a built-in spirit level for horizontally - and vertical measurement and with compasses device,

• 1. 带有环形水平仪的测量仪器及其制作方法 [P] . 中国专利： CN107289907A . 2017-10-24
• 2. 带有环形水平仪的测量仪器 [P] . 中国专利： CN206038000U . 2017.03.22
• 3. Laser spirit level has a measurement unit for measurement or setting of inclinations other than vertical or horizontal and which comprises an indicator element that can be rotated about a fixed axis and has a balance weight [P] . 德国专利： DE10219979A1 . 2003-11-13

  机译： 激光水平仪具有一个用于测量或设置垂直或水平以外的倾斜度的测量单元，它包括一个可绕固定轴旋转并具有平衡重的指示器元件

• 4. A spirit level with angle measurement - as well as horizontal and vertical measurement [P] . 德国专利： DE2300538A1 . 1974-07-11

  机译： 具有角度测量功能的水平仪-水平和垂直测量

• 5. Double-bead horizontal and vertical spirit level, apparatus using the spirit level, and method of measuring distance and height by using the apparatus [P] . 美国专利： US9733079B2 . 2017-08-15

  机译： 双珠水平和垂直水平仪，使用水平仪的装置以及使用该装置测量距离和高度的方法

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• 3. iIn-Situ/iMeasurements of the Photoconductivity of Multi-Layered Organic Photovoltaic Devices Using Impedance Spectroscopy [J] . Ryoji Maeda ,Hiroshi Tokairin ,Jun-Ichi Takahashi . 材料物理与化学进展（英文） . 2015,第2期
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