Cross Slits With Arrowhead for Educational Laboratory.
Product Code:
Optical-P0006
Description:
Cross Slits With Arrowhead -
Four
arrow head slits intersecting at a common point to project the arrow
head images.
Four
arrow head slits intersecting at a common point to project the arrow
head images. - See more at:
http://www.aticoexport.com/products/cross-slits-with-arrowhead/#sthash.wztJXYTk.dpuf