581 Starrett Precision Grinding Vise (4 x1-1/4* Jaw Opening and depth)

581
Starrett Precision Grinding Vise

• Extremely useful for accurate grinding
• Hardened steel construction
• Ground flat, square, and parallel within .0002″ (0.005mm)
• Jaw pressure on workpiece is forward and downward for
  repeatable positioning and maximum holding power
• Jaw opening 4″ (100mm), jaw depth 1-1/4″ (32mm)
• Movable jaw is slightly narrower than the base, enabling the vise
  to be used on its side
• 1/4-20 tapped hole in each side of the solid jaw to allow the use
  of a stop for repetitive operations
• “T” handle wrench provided for tightening the movable jaw
• Four drilled and counterbored holes for 5/16 bolts in the base of
  the vise for bolting to a sine plate or the bed of a machine tool
• Angle blocks available on special order
• For attaching special jaw plates, two holes are drilled in both the
  solid and movable jaws