Check that your microscope is at the correct height first, so that you're sitting with your back supported and your head is level over your shoulders with your chin level.
Measure the distance from the top of the worksurface to the middle of the knob (where you will be holding it)
Measure the width of your wrist from the thumb side to the pinky finger side. Subtract this measurement from the first measurement.
The distance from the top of the worksurface to the middle of the knob is 5 inches. Your wrist is approximately 2 inches wide. 5 minus 2 equals 3
You would use a 3 inch Wedge
If you need more height, you can combine products. For example, a 1-inch Stacker and a 3-inch Wedge for a height of 4-inches.
If you need more surface area try the ESD Oversized Stacker. At 1-inch high, 6-inches wide in the front, 9-inches wide in the back and a 10-inch length, you can cover a much bigger workspace.
What If your Microscope has Knob Extenders?
The 1-inch Stacker is ideal for achieving maximum comfort with ergonomic microscopes! It assures that your wrists are in a neutral position while providing a soft cushion that eliminates any potential contact with the hard worksurface edge.
Are your elbows sore from resting on the hard worksurface? Use the Mini-Stacker for a comfortable cushion!