Step 1: Understanding the Concept:
This question asks to identify a specific type of holding device (a vice) that is designed for gripping very small, cylindrical objects like pins and wires. Different vices are designed for different sizes and shapes of workpieces.
Step 2: Detailed Explanation:
Let's describe the different types of vices listed:
(A) Leg vice: This is a large, heavy-duty vice used in blacksmithing and forging. It has a long leg that extends to the floor to transmit the force of hammering blows. It is used for holding large, heavy workpieces and is not suitable for small, delicate items.
(B) Hand vice: This is a small, portable vice that is held in the hand. It is used for holding small workpieces for filing, drilling, or other light work. While it can hold small items, it is not specifically designed for very small diameter round objects like pins.
(C) Pin vice: A pin vice is a small, specialized hand-held tool specifically designed to hold very small diameter objects like pins, wires, small drill bits, or taps. It consists of a small chuck (called a collet) at one end that can be tightened to securely grip the small round object. Its name, "pin vice," directly reflects its function.
(D) Tool vice (or Toolmaker's vice): This is a precision vice, usually used on the table of a machine tool like a drilling machine or milling machine. It is designed to hold workpieces accurately but is not typically for hand-held use or for very small diameter pins.
Step 3: Final Answer:
The device specifically designed to hold small diameter round materials like wires and pins is the pin vice. Therefore, option (C) is the correct answer.