Pliers, Calipers & Dial Indicator

Side Cutting Pliers: These pliers have flat jaws grooved to hold the work, and are sharpened to cut light wire. Diagonal pliers (or wire cutters or diagonal cutting pliers or diagonal cutters or side cutting pliers) are pliers intended for the cutting of wire (they are generally not used to grab or turn anything). The plane defined by the cutting edges of the jaws intersects the joint rivet at an angle or "on a diagonal", hence the name.

Definition of cutting pliers : pliers that have a cutting blade on the side of the jaws.

Plan Pliers: Pliers are a multi-purpose hand tool with opposing jaws for gripping, bending and cutting. The two cross metal limbs provide tough leverage for multiplying the strength of the user's hand. Pliers are an essential part of every toolbox, as they have multiple uses about the home. While you can usually get by with an all-purpose pliers, there are other varieties of the tool that cater to a specific task. Choosing the right pliers for the right job will improve efficiency and safety.

Pliers are used to grip, position, tighten, loosen, and cut certain metal elements. Learn about five types of pliers:

1. Slip-joint Pliers: Slip joint pliers are pliers whose pivot point or fulcrum can be moved to increase the size range of their jaws. Most slip joint pliers use a mechanism that allows sliding the pivot point into one of several positions when the pliers are fully opened.

2. Water pump Pliers: Water Pump Pliers are commonly used for turning & holding nuts & bolts, gripping irregularly shaped objects, holding pipes etc. They hold all kinds of items with larger diameter too, regardless of whether they are round, square or hexagonal. Pliers have serrated jaws set at 45° from the handles.

3. Linesman's Pliers: Lineman's pliers, Kleins, linesman pliers and combination pliers, or simply pliers are a type of pliers used by linemen, electrical contractors and other tradesmen primarily for gripping, twisting, bending and cutting wire, cable and small metalwork components.

4. Locking Pliers: Locking pliers, sometimes referred to as vise-grips depending on the style of locking mechanism they incorporate, are great tools to keep handy. Typically, locking pliers are used where more torque is needed to pry or remove objects or where added grip is needed for holding objects in place.

5. Needle Nose Pliers: Needle nose pliers, also known as long-nose pliers, is a versatile tool that has long, tapering jaws with a pointed tip. Among their many uses are gripping, bending, and cutting small-gauge wire. They can reach into tight places that are inaccessible to other types of pliers. Some models have a cutting tool at the tip, especially for cutting wires and electrical work. Although they're commonly used to cut and bend small wires and electrical wiring, needle-nose pliers have other uses, as well. They can bend, cut and grip where fingers and other tools are too big or clumsy.

Calipers: Calipers are the very simple tools used together witha steel rule for the measurement or comparison oflinear dimensions. An experienced worker canachieve +/-0.05mm in the measurement. Calipers areclassified into two types

1. Outside Calipers: Outside calipers are used for measuringexternal dimensions such as the length, diameter, oreven the thickness of a solid. 

2. Inside Calipers: Inside calipers (figure 2) are used formeasuring internal dimensions such as the diameterof a hole, or the width of a slot etc.

Puppy Dial Indicator(Lever type): The principle of dial indicator (dial gauge) is that the linearmechanical movement of the stylus is magnified andtransferred to the rotation of pointer as shown in figure. The accuracy of dial indicator can be up to 0.01mm. It isusually used for calibration of machine.

Plunger type Dial indicator: The dial indicator or the Plunger dial gauge is one of the simplest and the most widely used mechanical comparator. First of all the use of plunger dial gauge used to compare work-pieces against a master. The accuracy of dial indicator can be up to 0.01mm.