Introduction to some common standard tools

A screwdriver is a common tool used to turn a screw to make it in place. It usually has a thin wedge head, which can be inserted into the slot or notch of the screw head.
Torque wrench, torque adjustable wrench, is a kind of wrench. According to power source, it can be divided into electric torque wrench, pneumatic torque wrench, hydraulic torque wrench and manual torque wrench. It can be used for both initial tightening and final tightening. It is used to adjust the torque first, and then tighten the bolts.
Vernier caliper is a measuring tool for measuring length, internal and external diameters and depth.
Electric oil bath is widely used for distillation, drying, concentration and impregnation of chemicals or biological products.
Ratchet wrench is a manual bolt tightening tool. It is a single head, double head and multi specification adjustable handle ratchet box wrench (for fixing holes).
A hammer is a tool that strikes an object to move or deform it. It is most commonly used to knock nails, rectify or knock objects open.
Circlip pliers, a special tool for installing inner spring ring and outer spring ring, belong to the class of pointed nose pliers in appearance, and the tong head can be straight inside, straight outside, bent inside, bent outside, etc.
The hand-held tachometer is mainly used to measure the speed.
Spanner is called monkey wrench for short. Its opening width can be adjusted within a certain range. It is a tool for fastening and loosening nuts and bolts of different specifications