Tension meter and wrench arrangement

A tension meter and a wrench arrangement comprising:

• a wrench;
• a tension meter mounted inside said wrench and adapted for detecting the tension of the said wrench upon operation of said wrench,
• an integrated device mounted on said wrench and electrically connected to said tension meter for signal output, said integrated device comprising:
• a Wheatstone bridge circuit, which provides a voltage output signal indicative of the amount of tension detected by said tension meter upon operation of said wrench,
• an amplifier, which amplifies the voltage output signal of said Wheatstone bridge circuit,
• a recorder, which records the amplifier voltage output signal outputted from said amplifier,
• process means, which converts the amplified voltage output signal outputted from said amplifier into a corresponding digital signal outputted from said amplifier into a corresponding digital signal, and output means, which displays the digital signal outputted from said processor means;
• a sliding sleeve axially slidably mounted thereon and adapted for protecting said integrated device;
• wherein the wrench comprises a handle and two work heads, one head is a biforked head and another head is a ring head;
• the tension meter and the integrated circuit are installed in the wrench;
• the tension meter is disposed near the two distal ends of the handle;
• the output means comprises a screen and a set of control buttons disposed on an outside of the handle and electrically connected to the tension meter.