Select the material for making the spindle of the bench vice. 

Explanation:

Engineer’s vice I Bench vice:

• Vices are used for holding the workpieces. They are available in different types.
• The vice used for bench work is the bench vice or called Engineer’s vice.
• A bench vice is made of cast iron or cast steel and it is used to hold the work for filing sawing threading and other hand operations.
• The material for making the spindle of the bench vice is mild steel.
• The size of the vice is stated by the width of the jaws. eg. 150mm parallel jaw bench vice.
• Vices are mounted rigidly on a workbench with the fixed jaw in line with the bench edge to permit a long work to be clamped in a vertical position.
• For the convenience of working the vice should be held at a correct height i.e. when the fist is pressed against the chin the elbow should touch the top of the vice.
• For further height adjustments wooden platforms can be used.