Graticules, Stage Micrometers, and Calibration Standards Grids


Consists of elements of 5 bars ranging from 1 line per mm to 18 lines per mm, with adjacent numbers indicating the number of lines per mm. Pro- duced as a vacuum deposited chrome image on 75mm x 75mm glass.


Cat.#


68098-20 68098-21 68098-22 68098-23 68098-24


Description


Grid with line pitch of 2mm Grid with line pitch of 1mm Grid with line pitch of 0.5mm Grid with line pitch of 0.25mm Grid with line pitch of 0.1mm


Gratings-Ronchi Rulings


Metallic grating pattern on glass squares with opaque lines approximately 50% of the pitch. Stock items are on 50mm x 50mm squares of glass 1.5mm thick. The grating covers the entire plate with the exception of R25, R26 and R27 where the grating occupies a 30mm wide central strip. The glass is B270 with refractive index of 1.52.


Uses:


z Paired as light gates. z Demonstrate interference patterns. z Produce optical gradients.


Mutually perpendicular pairs produce a screen of square apertures.


Vacuum deposited chrome gratings on glass substrate. Typically used for testing of resolution, field distortion and parfocal stability, but may be paired to provide interference patterns (fringe patterns) and as light gates.


Cat.#


68098-25 68098-26 68098-27 68098-28 68098-29 68098-30 68098-31 68098-32


Description Pattern


Grating – Ronchi ruling 2 lines per mm. — 50mm x 50mm B270 glass, R12 1.5mm thick, ruled over full area


Grating – Ronchi ruling 8 lines per mm. — 50mm x 50mm B270 glass, R15 1.5mm thick, ruled over full area


Grating – Ronchi ruling 20 lines per mm. — 50mm x 50mm B270 glass, R16 1.5mm thick, ruled over full area


Grating – Ronchi ruling 40 lines per mm. — 50mm x 50mm B270 glass, R17 1.5mm thick, ruled over full area


Grating – Ronchi ruling 50 lines per mm. — 50mm x 50mm B270 glass, R25 1.5mm thick, ruled over 30mm wide central strip


Grating – Ronchi ruling 100 lines per mm. — 50mm x 50mm B270 glass, R26 1.5mm thick, ruled over 30mm wide central strip


Grating – Ronchi ruling 125 lines per mm. — 50mm x 50mm B270 glass, R27 1.5mm thick, ruled over 30mm wide central strip


Grating – Ronchi ruling 200 lines per mm. — 26mm x 10mm


soda lime glass grating mounted in anodized aluminium slide mount 76mm x 25mm. Supplied in a polished wooden box


48


Electron Microscopy Sciences In PA: (215) 412-8400 • Toll-Free (800) 523-5874 Fax (215) 412-8450 or 8452 • email: info@emsdiasum.com


or stacie@ems-secure.com • www.emsdiasu m.com R28 Qty.


each each each each each each each each


R12 Pattern


Pattern R1 R2 R3 R4


R10


each each each each each


R28 pattern only


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