Correct option is B
An angle plate is a precision tool used in machine shops for holding workpieces at right angles during machining, drilling, and marking.
· Angle plates come in different grades, with Grade 1 being the most accurate and Grade 4 being the least accurate.
· For general machine shop work, Grade 2 angle plates are commonly used because they offer a balance between accuracy and cost.
· Grade 1 angle plates are used in high-precision industries, while Grade 3 and 4 are suitable for low-accuracy applications.
· Material: Most angle plates are made from cast iron or hardened steel to provide durability and stability.
