A level gauge includes a housing, a vertical member, and a perpendicular member. The housing includes a bottom wall and a side wall. A surface of the side wall includes a first scale. The bottom wall and the side wall enclose a receiving cavity. The vertical member is arranged in the receiving cavity and includes an axis maintained in a vertical orientation in a natural state. A center of gravity of the perpendicular member is arranged on top of the vertical member. A plane of the perpendicular member is maintained perpendicular to the axis of the vertical member. When the bottom wall is placed on a gauging surface, an inclination angle and inclination direction of the gauging surface are obtained simultaneously.

A frame which has a wire extending across a rear of the frame is hung on a wall by an integral flexible spring member shaped to define a center mounting plate fastened to lie flat on the wall and a spring strap standing at right angles to the plate with a pair of arms each extending outwardly from the mounting plate along the wall to a respective side of the mounting plate. The arms receive and locate the wire extending along the arms and depending from ends of the arms to the sides of the frame. The arms can flex and the arms allow longitudinal movement of the wire along the arms to allow movement of the frame side to side relative to the mounting plate. A stiffening rod can be inserted onto the strap.

Level tools and level indicating devices for determining the angle of a vertically oriented object relative to both level and plumb capable of being read without requiring the tool's user to change his or her position or the position of the level tool.

An optical fiber inclination measurement apparatus and a differential inclination measurement system are provided, which is related to the field of monitoring technology. The apparatus includes a supporting mechanism with a base and a base frame, a swinging mechanism with a pendulum, a cycloid, and a first reflective film is disposed on the pendulum. The measurement mechanism includes a first optical fiber, and an end surface of the first optical fiber is disposed opposite to the first reflective film. During an earthquake generating process, a landform changes and the pendulum swings, resulting in changes in displacement. The end surface of the first optical fiber together with the first reflective film form a Fabry-Perot cavity. The cavity length of the Fabry-Perot cavity changes before and after the landform deforms, and an angle of inclination is equal to a value obtained by dividing the cavity length variation of the Fabry-Perot cavity by the pendulum length.

Disclosed is a multifunctional level gauge for applying a nano adhesive tape for convenient and quick positioning. The multifunctional level gauge comprises a level ruler (1) with a hollow profile, wherein a transverse level (2) and a vertical level (3) are respectively arranged on the level ruler (1), at least two nano adhesive tapes (4) for convenient and quick positioning are pasted and fixed to a left side surface of the level ruler (1), and an adhesive tape positioning structure is arranged below the nano adhesive tapes (4); and an angle measurement device (5) capable of performing 360-degree omnidirectional measurement and a swing-type offset measurement structure for cooperatively observing whether an intersection plane is inclined are arranged at an upper end portion of the level ruler (1), and the swing-type offset measurement structure comprises a swing connection rod (6), a counterweight cone (7) and an alignment pointer (8). On the basis of achieving 360-degree omnidirectional angle measurement, horizontal measurement, vertical measurement, and plane measurement can be achieved at the same time; during measurement, whether a measurement plane is inclined can be determined by observing whether the counterweight cone (7) coincides with the alignment pointer (8); and the multifunctional level gauge can be directly pasted to the measurement plane, the level gauge can be conveniently placed by a worker, the working efficiency is improved, and the measuring effect is good.

Disclosed is a multifunctional level gauge for applying a nano adhesive tape for convenient and quick positioning. The multifunctional level gauge comprises a level ruler (1) with a hollow profile, wherein a transverse level (2) and a vertical level (3) are respectively arranged on the level ruler (1), at least two nano adhesive tapes (4) for convenient and quick positioning are pasted and fixed to a left side surface of the level ruler (1), and an adhesive tape positioning structure is arranged below the nano adhesive tapes (4); and an angle measurement device (5) capable of performing 360-degree omnidirectional measurement and a swing-type offset measurement structure for cooperatively observing whether an intersection plane is inclined are arranged at an upper end portion of the level ruler (1), and the swing-type offset measurement structure comprises a swing connection rod (6), a counterweight cone (7) and an alignment pointer (8). On the basis of achieving 360-degree omnidirectional angle measurement, horizontal measurement, vertical measurement, and plane measurement can be achieved at the same time; during measurement, whether a measurement plane is inclined can be determined by observing whether the counterweight cone (7) coincides with the alignment pointer (8); and the multifunctional level gauge can be directly pasted to the measurement plane, the level gauge can be conveniently placed by a worker, the working efficiency is improved, and the measuring effect is good.

There is provided an adjustment jig. A fixing unit has a plate shape and is detachably fixed to an attachment unit of a sensor provided on a vehicle side. An extension unit is provided to extend from the fixing unit. A suspension unit is suspended from the extension unit.

The invention provides a laser demarcation apparatus with angle detection function including a main body. The main body is disposed with a pendulum body, and the pendulum body is disposed with a laser module. The main body is further disposed with a motherboard, and the motherboard is disposed with a tilt detection apparatus. The tilt detection apparatus includes an MCU control module, an acceleration sensor, a crystal oscillator module and a power supply module. The MCU control module is used for controlling and analyzing angle tilt information, the acceleration sensor is used for detecting a tilt angle, the crystal oscillator module is used for stabilizing a control frequency of the MCU control module, and the power supply module is used for supplying power. The MCU control module is used for controlling the acceleration sensor and the crystal oscillator module individually.

The invention provides a laser demarcation apparatus with angle detection function including a main body. The main body is disposed with a pendulum body, and the pendulum body is disposed with a laser module. The main body is further disposed with a motherboard, and the motherboard is disposed with a tilt detection apparatus. The tilt detection apparatus includes an MCU control module, an acceleration sensor, a crystal oscillator module and a power supply module. The MCU control module is used for controlling and analyzing angle tilt information, the acceleration sensor is used for detecting a tilt angle, the crystal oscillator module is used for stabilizing a control frequency of the MCU control module, and the power supply module is used for supplying power. The MCU control module is used for controlling the acceleration sensor and the crystal oscillator module individually.

This is a level designed to light-up when level. The drawings and specifications illustrate how each embodiment, nos. 1 thru 10, FIGS. 1 thru 10a, is designed to achieve this by its unique switching system. Each system is designed to complete the electrical circuitry as required for the level's lights to illuminate when the level is level. Each embodiment and switch system, also referred to as switch mechanism or contact switch, utilizes gravity and balance to direct the moving parts and complete the circuitry, whether by use of a pendulum, wheels, ball, balls, roller, rollers, liquid or leveling arm. The circuitry includes lights(s), battery(s), wiring, the switch system, and optionally a manual on/off override switch.