| Brand | National Teaching Aids, Inc. |
|---|---|
| Recommended Age Range | 7th & 8th Grade |
| Age Level | 8-11 Years, 12-16 Years |
Check the listing for details. School Surplus Micro Slide Viewer by National Teaching Aids Inc. Condition: Used. Listed at 10.40 USD. School Surplus Micro Slide Viewer by National Teaching Aids Inc. I picked up several of these at a school surplus auction. It is made of plastic but does have a focus ability. It's a cheap way to get started and perfect for the young science beginner, homeschooling, etc. There is a slot to slip the slide through. I do not know the magnification. See the pictures.