Dino-Lite-MS-W1-Rolling-St&-for-Digital-Microscopes-Dino-Lite-MS-W1-This-innovative-vertical-pole-st&-is-designed-to-allow-digital-microscopes-to-easily-examine-curved-&-flat-surfaces-The-st&-has-rubber-wrapped-barrel-rollers-that-will-easily-glide-over-tubular-&-curved-objects-of-at-least-70mm-&-will-also-roll-easily-over-flat-surfaces-allowing-the-easy-inspection-of-large-flat-areas-Dino-Lite-MS-W1-Rolling-St&-For-Flat-&-Cylindrical-Surfaces