[student question] how to measure the section size of the platform when the top lift cylinder is designed below?

[solution] when the top lift cylinder is designed below, it is not easy to measure the width of the platform because the two sides of the cylinder block the measurement tool directly. Can lead to a horizontal line on car template, through tools such as level, make its position on both sides of the highly consistent, and welding rods (such as rebar, etc.), and by measuring the lead bar, it is concluded that the cross section width size.

All the above contents are arranged according to the problems encountered in the actual work of the students. For reference, please timely communicate and correct any questions.