Bausch & Lomb 35-53-04-80 Certified Precision Grating

Bausch & Lomb 35-53-04-890 Certified Precision Grating specifications: – Grooves/mm: 150. – Size: 26 x 26 mm. – Material: Copper – Blaze wavelength: 8 um – Blaze angle: 36 degrees 52 minutes Notes: Damaged at corners