Tape measure having installable bobbin

A tape measure including:

• a first housing module, the first housing module including a first housing providing a spring space on one side, a rotational shaft mounted rotatably on the first housing, a spring located in the spring space, the spring coupled to the first housing by one end and coupled to the rotational shaft by the other end, and a first cover covering the spring space;
• an installable bobbin rotatably mounted around the rotational shaft while being in close contact with the rotational shaft or the first cover of the first housing module, on which a blade is wound;
• and
• a second housing module, the second housing module including a second housing assembled with the first housing,
• wherein, as the bobbin is installed onto the first housing module, the bobbin is directly coupled to a free end of the rotational shaft when accommodating the rotational shaft of the first housing module, and the first housing, the spring, the rotational shaft, and bobbin are mechanically connected when the second housing module is assembled with the first housing module.