A reticle, or reticule (from Latin reticulum, meaning 'net'), also known as a graticule (from Latin craticula, meaning 'gridiron'), is a pattern of fine lines or markings built into the eyepiece of a sighting device, such as a telescopic sight in a telescope, a microscope, or the screen of an oscilloscope, to provide measurement references during visual examination.
Both terms may be used to describe any set of lines used for optical measurement, but in modern use reticle is most commonly used for gunsights and such, while graticule is more widely used for the oscilloscope display, microscope slides, and similar roles.
Specifications
Material: | N-BK7, B270 |
Diameter: | +0/-0.05mm |
Clear aperture: | >80% of diameter |
Thickness: | +/-0.1mm |
Parallelism: | < 1 arc minutes |
Surface quality: | 60-40 scratch and dig |
Flatness: | 2λ@632.8nm |
Chamfer: | < 0.2mm x 45° |
Pattern: | lines to be etched and filled with black ink/chrome coating |
line thickness 0.006 +/- 0.002mm |
A reticle, or reticule (from Latin reticulum, meaning 'net'), also known as a graticule (from Latin craticula, meaning 'gridiron'), is a pattern of fine lines or markings built into the eyepiece of a sighting device, such as a telescopic sight in a telescope, a microscope, or the screen of an oscilloscope, to provide measurement references during visual examination.
Both terms may be used to describe any set of lines used for optical measurement, but in modern use reticle is most commonly used for gunsights and such, while graticule is more widely used for the oscilloscope display, microscope slides, and similar roles.
Specifications
Material: | N-BK7, B270 |
Diameter: | +0/-0.05mm |
Clear aperture: | >80% of diameter |
Thickness: | +/-0.1mm |
Parallelism: | < 1 arc minutes |
Surface quality: | 60-40 scratch and dig |
Flatness: | 2λ@632.8nm |
Chamfer: | < 0.2mm x 45° |
Pattern: | lines to be etched and filled with black ink/chrome coating |
line thickness 0.006 +/- 0.002mm |
