A 5X lens large enough to cover an entire Petri dish! 4" in diameter. 10 per pkg.

1 1/2" cube size with 32 magnifier cover. Versatile clear acrylic boxes have magnifying covers. Useful as viewers for insects and other specimens, as...

Safe, convenient, inexpensive and reusable. Sticky on both sides. Just stick the specimen you wish to examine on one side and then stick the slide on...