4 x 3" Rectangular Plane Glass Mirror, 10-Pack engine models Single-pole double-throw switch on a

Single-pole double-throw switch on a demonstration base

Extreme 300x enlargement resolves fine structures including capillary beds and nerve endings in a detailed skin cross section for histology and dermatology teaching

High-grade zinc rod with brass terminal for repeatable circuit connections

Large-scale typical flower model with removable floral parts and a bisected ovary showing internal ovule arrangement for detailed botany instruction

4 x 3" Rectangular Plane Glass Mirror, 10-Pack engine models Single-pole double-throw switch on aDesigned for full image reflection demos, ten 4 by 3 inch plane glass mirrors at ~2. 5mm thickness give room for multi ray tracing and wider optical setups in introductory optics.