The 540 lab jacks incorporate a unique scissor design with low backlash pivots that make the platform virtually wobble-free at any location along the vertical travel. The large adjustment knob is attached to a rolled brass leadscrew to ensure smooth stiction-free adjustment even under heavy loads.
- Two convenient sizes
- U.S. system and metric compatible
- Heavy load capacity
- Minimum stack height 2.40-inch [60.96-mm]
- Travel range 1.85-inch [46.99-mm]
- Parallelism over full travel .006-inch [1 milliradian]
- Maximum load over full travel 60 lbs