T-R19DS13P - Positive Concentric Circle Reticle, Ø19.0 mm, UVFS
T-R19DS13P - Positive Concentric Circle Reticle, Ø19.0 mm, UVFS
- Ten Numbered Concentric Circles Increasing in Diameter by 1 mm, Superimposed on a Crosshair
- Positive Pattern Available in 19.0 mm, 21.0 mm, and 1" (25.4 mm) Diameters
- Ø1" (Ø25.4 mm) Negative Pattern Option
Our concentric circle reticles consist of a centered crosshair and ten numbered concentric circles. The innermost circle is 1 mm in diameter, with each subsequent circle increasing in diameter by 1 mm. The pattern is formed from lines that are 10 µm wide. Made by plating chrome onto one side of a 1.5 mm thick UV fused silica substrate, these optics provide greater than 90% transmission in the 200 - 1200 nm spectral range.