Electronic tension measured spanner with a slot for connecting a memory device

An electronic tension measured spanner with a slot for connecting a memory device, comprise:

• a handle (2);
• a cover (21) enclosing at one end of the handle (21);
• the cover being formed by four lateral planes and one end plane;
• the four lateral planes including two flat planes at two opposite sides and two convex cambered planes at the other two opposite sides;
• the end plane being adjacent to the four lateral planes and being at a distal end of the handle (2);
• a head (3) extending from one end of the handle (2) for engaging a screwing object;
• the head (3) being installed at one end of the handle (2) which is opposite to the end plane of the cover (21);
• a display unit (22) being installed on the handle (2) between the head (3) and the cover (21);
• a strain gauge (6) being installed on the handle (2) and between the head (3) and the display unit (22) for measuring tensions in the operation of the spanner;
• wherein in operation, the screwing object will apply a react force to the head (3) and then the force will be measured by the strain gauge (6) and then transfers to the display unit (22) so as to display the tension of the spanner;
• and
• a slot (23) being formed at the end plane of the cover (2);
• the slot (23) being electrically connected to the display unit (22);
• a memory device (231) being insertable into the slot (23) for receiving the data from the display unit (22);
• and the slot (23) being a USB slot.