Description
Slide 7 single slots
SKU: 212035
Brand: Jeulin
Slide:
- 50 x 50mm; 24 x 36 mm useful.
- 7 single slots of calibrated width:
. 400, 280, 120, 100, 50 and 40 µm
. A 'mystery' slit is placed at the end of the row, after the thinnest slit (its width, to be found by the pupils, is 70 µm)
Accuracy: approx. 10%.