Surplus Shed Herschel wedge prisms???
Posted: Sun Feb 19, 2017 11:44 pm
Surplus shed is having a 45% off sale today.....
http://www.surplusshed.com/pages/item/l9113d.html
At that price these prisms look VERY interesting to anyone who wants to make their own Herschel wedge.
http://www.surplusshed.com/pages/item/l9113d.html
At that price these prisms look VERY interesting to anyone who wants to make their own Herschel wedge.