A method of verifying that a robot carried self-piercing rivet gun system is set-up so that workpieces that are to be riveted will be normal to a self-piercing rivet gun of the robot carried self-piercing rivet gun system during riveting includes utilizing a perpendicularity sensor to verify that the workpieces will be normal to the self-piercing gun during riveting.

A method of verifying that a robot carried self-piercing rivet gun system is set-up so that workpieces that are to be riveted will be normal to a self-piercing rivet gun of the robot carried self-piercing rivet gun system during riveting includes utilizing a perpendicularity sensor to verify that the workpieces will be normal to the self-piercing gun during riveting.

Some embodiments of the disclosure provide a method for measuring orthogonality of an orthogonal axis system, In some examples, the method includes following steps: placing an instrument on a bearing surface, intercepting a second rotary axis along an interception plane to obtain a first virtual cross section of the second rotary axis, and measuring the first virtual cross section to obtain a geometric center of the first virtual cross section as a first position; rotating a first rotary device to enable the second rotary axis to rotate with a preset angular degree, and measuring the second virtual cross section to obtain a geometric center of the second virtual cross section as a second position; and determining whether the orthogonality between the first rotary axis and the second rotary axis meets requirements or not on the basis of the first position and the second position.

A square tool includes a first arm and a second arm which are disposed at 90 (right angle) to each other. Specifically, the arms each have an outer work edge which are set at right angles to each other. In contrast to a typical square tool where the arms meet at a corner junction, in the square tool of the present invention, the arms have inner ends which are spaced from each other and are joined by a connector therebetween. The connector provides a space where the projected corner junction of the arms would be located.

A square tool includes a first arm and a second arm which are disposed at 90 (right angle) to each other. Specifically, the arms each have an outer work edge which are set at right angles to each other. In contrast to a typical square tool where the arms meet at a corner junction, in the square tool of the present invention, the arms have inner ends which are spaced from each other and are joined by a connector therebetween. The connector provides a space where the projected corner junction of the arms would be located.

Disclosed are a tool and a method for measuring a perpendicularity and an angle of a femur of a vehicle crash dummy. The tool includes: a base, where the base is provided with a guide ring gear; and a clamp assembly, where the clamp assembly is configured to clamp a femur part. A measurement assembly can measure the perpendicularity and the angle of the femur part conveniently.

Disclosed are a tool and a method for measuring a perpendicularity and an angle of a femur of a vehicle crash dummy. The tool includes: a base, where the base is provided with a guide ring gear; and a clamp assembly, where the clamp assembly is configured to clamp a femur part. A measurement assembly can measure the perpendicularity and the angle of the femur part conveniently.

A tram adapter apparatus, kit and method is used with an alignment tool to check the alignment of the spindle and the table of a machine tool. The alignment tool has two or more indicators retained in a spaced apart relation to the spindle of the machine tool. A tram adapter body is interposed between the indicator body and the stop of one of the indicators, moving the indicator tip to a retracted position. The other indicator remains in the deployed position and may be used to tram the table of the machine tool to check the alignment between the table and spindle.

A tram adapter apparatus, kit and method is used with an alignment tool to check the alignment of the spindle and the table of a machine tool. The alignment tool has two or more indicators retained in a spaced apart relation to the spindle of the machine tool. A tram adapter body is interposed between the indicator body and the stop of one of the indicators, moving the indicator tip to a retracted position. The other indicator remains in the deployed position and may be used to tram the table of the machine tool to check the alignment between the table and spindle.

A perpendicularity verification device is provided for verifying perpendicularity of a concrete test specimen in a testing machine. The device comprises a unitary planar sheet. The sheet has an elongate vertical straight side edge and a horizontal straight bottom edge. The side and bottom edges are perpendicular to one another. A corner notch is provided between the side and bottom edges. In use, the bottom edge rests on a platen of the testing machine so that the notch circumvents a retaining cup of the testing machine and the vertical edge rests against the test specimen.