Specialist Designs

Matthews spray droplet sizing reticle : NG30
Thomson pattern for dust analysis : G23
Chalkley point array : NG52
Pharmaceutical PSA pattern, IMA reticle (European Pharmacopoeia, USP 788) : G57
Soil analysis counting pattern (L G Briarty) : NG14
Lennox grain size analysis reticle : NG21
Kotter pattern : G48
Henning Reseau & Zeiss pattern integrating eyepiece reticle : G49,G47,G50

Graticules Optics now offer 20.4mm (Olympus), 24.5mm (Leica) and 25mm (Nikon, Meiji) diameter reticles at standard prices – no need to pay a premium price for a special size

G23 THOMPSON RETICLE FOR DUST ANALYSIS

Key Features

Eyepiece reticle with squares and scale to Thompson design

For counting particles in any of three areas. Squares are identified as A, B and C and are sized 4mm, 7mm and 10mm. Horizontal scale is 10mm length subdivided into 100 x 0.1mm divisions.

Pattern 

Description

Diameter 

Order code

G23

Thompson for Dust Analysis

16mm

01B16056

 

Specify diameter on all orders

19mm

01B19056

 

 

20.4mm

01B20.4056

 

 

21mm

01B21056

 

 

23mm

01B232056

 

 

24mm

01B24056

 

 

24.5mm

01B24.5056

 

 

25mm

01B25056

 

 

26mm

01B26056

 

 

27mm

01B27056

 

 

Others

 

G47 ZEISS INTEGRATING EYEPIECE DISC 100

Key Features

Eyepiece reticle with 100 points

Pattern has 100 reference points marked on horizontal lines referenced as 1-10 on bottom and right side.

Pattern 

Description

Diameter 

Order code

G47

Zeiss Integrating Eyepiece Disc 1, 100 point

16mm

01B16090

 

Specify diameter on all orders

19mm

01B19090

 

 

20.4mm

01B20.4090

 

 

21mm

01B21090

 

 

23mm

01B23090

 

 

24mm

01B24090

 

 

24.5mm

01B24.5090

 

 

25mm

01B25090

 

 

26mm

01B26090

 

 

27mm

01B27090

 

 

Others

 

G48 KOTTER PATTERN

Key Features

Eyepiece reticle with Kotter pattern for analysis of bitumous coal and anthracite

This reticle is normally used with a 20x objective and is sized accordingly. If other objective magnifications are used then we have to apply a calibration factor to ensure the pattern is the correct size. Please supply details of objective magnification with all orders.

Pattern 

Description

Diameter 

Order code

G48

Kotter pattern

16mm

01B16072

 

Specify diameter on all orders

19mm

01B19072

 

NB This Pattern requires a calibration factor

20.4mm

01B20.4072

 

 

21mm

01B21072

 

 

23mm

01B23072

 

 

24mm

01B24072

 

 

24.5mm

01B24.5072

 

 

25mm

01B25072

 

 

26mm

01B26072

 

 

27mm

01B27072

 

 

Others

 

G49 HENNING RESEAU PATTERN – ZEISS INTEGRATING DISC 1

Key Features

Eyepiece reticle with 25 points on 6 horizontal lines

Pattern 

Description

Diameter 

Order code

G49

Henning Reseau Pattern (Zeiss Integrating Disc 1)

16mm

01B16073

 

Specify diameter on all orders

19mm

01B19073

 

 

20.4mm

01B20.4073

 

 

21mm

01B21073

 

 

23mm

01B23073

 

 

24mm

01B24073

 

 

24.5mm

01B24.5073

 

 

25mm

01B25073

 

 

26mm

01B26073

 

 

27mm

01B27073

 

 

Others

 

G50 INTEGRATING EYEPIECE

Key Features

Eyepiece reticle with 100 point integrating pattern

Slightly simplified version of G47 pattern

Pattern 

Description

Diameter 

Order code

G50 

Integrating Eyepiece [simplified] 100 point

19mm

01B19075

 

Specify diameter on all orders

20.4mm

01B20.4075

 

 

21mm

01B21075

 

 

23mm

01B23075

 

 

24mm

01B24075

 

 

24.5mm

01B24.5075

 

 

25mm

01B25075

 

 

26mm

01B26075

 

 

27mm

01B27075

 

 

Others

 

G57 PHARMACEUTICAL PSA PATTERN, IMA RETICLE

Key Features

Eyepiece reticle for particulate analysis in pharmaceutical applications

Pattern comprises large circle with small sized dots and circles, and horizontal scale. Often referred to as the Pharmaceutical PSA pattern, European Pharmacopeia pattern or IMA Reticle (USP 788)

Normally used on a microscope with 10x objective lens so that the main circle diameter equates to 1mm at the stage. If other objective magnifications are used then we will make a version with a special calibration factor. We recommend that the PS8 Micrometer Scale with UKAS certificate of calibration is also purchased to calibrate the G57 reticle and provide measurement traceability for ISO. Click on the link at the bottom of this page for more details.

Pattern 

Description

Diameter 

Order code

NE29

Pharmaceutical PSA Pattern

19mm

01B19076

 

20.4mm

01B20.4076

 

 NB This pattern may require a calibration factor 

21mm

01B21076

 

 if 10x objective is not used.

23mm

01B23076

 

 Specify diameter on all orders

24mm

01B242076

 

 

24.5mm

01B24.5076

 

 

25mm

01B25076

 

 

26mm

01B26076

 

 

27mm

01B27076

 

 

Others

 

NG14 COUNTING PATTERN

Key Features

Eyepiece reticle for geological and soil analysis

Pattern comprises 10mm x 10mm square of 100 crosses in the form of a 10 x 10 array.

Pattern 

Description

Diameter 

Order code

NG14

Counting Pattern - Soil Analysis

16mm

01B16254

 

Specify diameter on all orders

19mm

01B19254

 

 

20.4mm

01B20.4254

 

 

21mm

01B21254

 

 

23mm

01B23254

 

 

24mm

01B24254

 

 

24.5mm

01B24.5254

 

 

25mm

01B25254

 

 

26mm

01B26254

 

 

27mm

01B27254

 

 

Others

 

NG21 LENNOX GRAIN SIZE RETICLE

Key Features

Eyepiece reticle for Lennox grain size analysis

Pattern comprises and array of dashed squares and crosses.

Pattern 

Description

Diameter 

Order code

NG21

Lennox for Grain Analysis

16mm

01B16255

 

Specify diameter on all orders

19mm

01B19255

 

 

20.4mm

01B20.4255

 

 

21mm

01B21255

 

 

23mm

01B23255

 

 

24mm

01B24255

 

 

24.5mm

01B24.5255

 

 

25mm

01B25255

 

 

26mm

01B26255

 

 

27mm

01B27255

 

 

Others

 

NG30 MATTHEWS SPRAY DROPLET SIZING RETICLE

Key Features

Eyepiece reticle with dots ranging from 50 to 400 microns

Matthews pattern is designed for the assessment of aerosol droplets. Pattern has 4 segments of dots with sizes of 50, 100, 200 and 400 microns.

Pattern 

Description

Diameter 

Order code

NG30

Matthews Spray Droplet

16mm

01B16261

 

Specify diameter on all orders

19mm

01B19261

 

 

20.4mm

01B20.4261

 

 

21mm

01B21261

 

 

23mm

01B23261

 

 

24mm

01B24261

 

 

24.5mm

01B24.5261

 

 

25mm

01B25261

 

 

26mm

01B26261

 

 

27mm

01B27261

 

 

Others

 

NG52 CHALKLEY POINT ARRAY

Key Features

Eyepiece reticle with Chalkley Point pattern

A circle divided into quarters and populated with 25 points (dots). Used to quickly determine the relationship of components to each other using random sampling. See page 14 of eyepiece reticles catalogue for more information.

Pattern 

Description

Diameter 

Order code

NG52

Chalkley Point Array

16mm

01B16257

 

Specify diameter on all orders

19mm

01B19257

 

 

20.4mm

01B20.4257

 

 

21mm

01B21257

 

 

23mm

01B23257

 

 

24mm

01B24257

 

 

24.5mm

01B24.5257

 

 

25mm

01B25257

 

 

26mm

01B26257

 

 

27mm

01B27257

 

 

Others

 

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