Quick Answer: The Gratings and Slits - Pack of 9 are nine slides in 50 x 50 mm mounts: six with 1 to 6 slits, each approximately 0.0625 mm wide at 0.25 mm centre spacing, and three coarse gratings.
Last updated: October 2026
Key Features
Nine slides in 50 x 50 mm mounts
Six slides with a series of 1 to 6 slits
Slits approximately 0.0625 mm wide, 0.25 mm between slit centres
Coarse grating of 150 slits, half the width, same separation
Coarse grating of 150 slits, same width and separation as the multiple slits
Coarse grating of 300 slits, half the width and half the separation
Technical Specifications
Specification
Value
Number of slides
9
Mount size
50 x 50 mm
Slit width
Approximately 0.0625 mm
Slit centre separation
0.25 mm
About This Product
The six multiple-slit slides go from a single slit up to six slits, all with the same slit width and spacing. The three coarse gratings then have 150 or 300 slits, with the slit width and separation either kept or reduced relative to those slides, so slit number, width and separation can each be varied. Export supply of the Gratings and Slits - Pack of 9 can be arranged to laboratories and schools in Japan, Paraguay, Tunisia, Indonesia, Uzbekistan and Haiti.
Frequently Asked Questions
Q1. How do the three coarse gratings differ? One has 150 slits at half the width with the same separation, one has 150 slits matching the multiple slits, and one has 300 slits at half the width and half the separation.
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