The movable jaw of a bench vice is not moving even though the spindle is turned. It is due to the reason that

Fixed and movable jaws are over tight

Spindle pin is broken

Spring is not functioning

Threads on spindle are slightly worn out

Angular to the handle

Straight to the handle

Cross to the handle

Bent towards the handle

Angular to the handle

Straight to the handle

Cross to the handle

Bent towards the handle

It can hold the jobs having parallel sides

It is fixed parallel to the shop floor

Its width of jaws are parallel

Its movable jaw moves parallel to the fixed jaw

Mild steel

Phosphorous bronze

White metal

Alloy steel