A tool, such as a tape measure, including a retraction system is shown. The tape measure includes a magnetic retraction speed controller. The magnetic retraction speed controller includes a magnet that induces an eddy current in a conductive component of the tool and slows a retraction speed.

A tool, such as a tape measure, including a retraction system is shown. The tape measure includes a magnetic retraction speed controller. The magnetic retraction speed controller includes a magnet that induces an eddy current in a conductive component of the tool and slows a retraction speed.

A tool, such as a tape measure, including a retraction system is shown. The tape measure includes a magnetic retraction speed controller. The magnetic retraction speed controller includes a magnet that induces an eddy current in a conductive component of the tool and slows a retraction speed.

A tool, such as a tape measure, including a spring-based retraction system is shown. The tape measure includes a fluid-based retraction speed controller. The speed controller may be formed from a rotor/stator arrangement. The rotor is coupled to the reel and the stator is coupled to the housing opposing the rotor. The rotor converts some rotational energy from tape reel into movement of a fluid (e.g., movement of air, movement of oil, etc. through friction) which acts to slow or limit the retraction/rotational speed of the reel as the retraction spring expands driving the reel during tape blade retraction.

A tool, such as a tape measure, including a spring-based retraction system is shown. The tape measure includes a fluid-based retraction speed controller. The speed controller may be formed from a rotor/stator arrangement. The rotor is coupled to the reel and the stator is coupled to the housing opposing the rotor. The rotor converts some rotational energy from tape reel into movement of a fluid (e.g., movement of air, movement of oil, etc. through friction) which acts to slow or limit the retraction/rotational speed of the reel as the retraction spring expands driving the reel during tape blade retraction.

A tool, such as a tape measure, including a spring-based retraction system is shown. The tape measure includes a fluid-based retraction speed controller. The speed controller may be formed from a rotor/stator arrangement. The rotor is coupled to the reel and the stator is coupled to the housing opposing the rotor. The rotor converts some rotational energy from tape reel into movement of a fluid (e.g., movement of air, movement of oil, etc. through friction) which acts to slow or limit the retraction/rotational speed of the reel as the retraction spring expands driving the reel during tape blade retraction.

A tool, such as a tape measure, including a spring-based retraction system is shown. The tape measure includes a fluid-based retraction speed controller. The speed controller may be formed from a rotor/stator arrangement. The rotor is coupled to the reel and the stator is coupled to the housing opposing the rotor. The rotor converts some rotational energy from tape reel into movement of a fluid (e.g., movement of air, movement of oil, etc. through friction) which acts to slow or limit the retraction/rotational speed of the reel as the retraction spring expands driving the reel during tape blade retraction.

A tool, such as a tape measure, including a retraction system is shown. The tape measure includes a magnetic retraction speed controller. The magnetic retraction speed controller includes a magnet that induces an eddy current in a conductive component of the tool and slows a retraction speed.

A tool, such as a tape measure, including a retraction system is shown. The tape measure includes a magnetic retraction speed controller. The magnetic retraction speed controller includes a magnet that induces an eddy current in a conductive component of the tool and slows a retraction speed.

Provided is a length measuring device, which includes a first case including a bobbin axis at a center, a second case to which a circuit board is attached, a bobbin mounted on the bobbin axis and around which a tape is wound, a sensor for sensing an amount of rotation of the bobbin rotated by the tape being pull-out, and first and second anti-tilt members for preventing tilting of the bobbin during rotation of the bobbin.