These are rectangular blocks that are ideal for refraction and internal reflection studies as well as index of refraction measurements.
| Order# | Description | Size |
| RCB075 | Rectangular Acrylic Block | 75 x 50 x 15mm |
| RCB100 | Rectangular Acrylic Block | 100 x 75 x 20mm |
| RCB115 | Rectangular Acrylic Block | 115 x 65 x 20mm |
| RCB115-G | Rectangular Glass Block | 115 x 65 x 20mm |
| RCB125 | Rectangular Acrylic Block | 125 x 65 x 20mm |
