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National 425 Series, Instructions Manual, Page: 5 / 8

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5 

SPECIFICATION CHART 

 

Eyepieces 

Zoom 

Objective 

Position 

Standard Objective 

(supplied) 

Auxiliary Objective 

0.5X 

(Optional) 

# 705-425 

Auxiliary Objective 

1.5X 

(Optional) 

# 715-425 

Working Distance 

113mm 

Working Distance 

192mm 

Working Distance 

50mm 

Total 

Magnification 

Field 

Size 

Total 

Magnification 

Field 

Size 

Total 

Magnification 

Field 

Size 

 

WF5X 

Field No.23 

(Optional) 

# 605-425 

Does Not Accept 

Reticle 

Interpupillary 

Distance 

52~77 

 

.75X 

3.8X 

30.7 

1.9X 

61.3MM 

5.6X 

20.4mm 

1X 

5X 

23mm 

2.5X 

46mm 

7.5X 

15.3mm 

2X 

10X 

11.5mm 

5X 

23mm 

15X 

7.7mm 

3X 

15X 

7.7mm 

7.5X 

15.3mm 

22.5X 

5.1mm 

4X 

20X 

5.8mm 

10X 

11.5mm 

30X 

3.8mm 

5X 

25X 

4.6mm 

12.5X 

9.2mm 

37.5X 

3.1mm 

 

WF10X 

Field No. 23 

(Supplied) 
# 610-425 

 

Accepts Reticle 

24.95mm O.D. 

Interpupillary 

Distance 

49~74mm 

.75 

7.5X 

30.7 

3.8X 

61.3 

11.3X 

20.4mm 

1X 

10X 

23mm 

5X 

46mm 

15X 

15.3mm 

2X 

20X 

11.5mm 

10X 

23mm 

30X 

7.7mm 

3X 

30X 

7.7mm 

15X 

15.3mm 

45X 

5.1mm 

4X 

40X 

5.8mm 

20X 

11.5mm 

60X 

3.8mm 

5X 

50X 

4.6mm 

25X 

9.2mm 

75X 

3.1mm 

 

WF15X 

Field No. 17  

(Optional) 

# 615-425 

Does Not Accept 

Reticle 

Interpupillary 

Distance 

47~72mm 

 

.75X 

11.3 

22.7mm 

5.6X 

45.3 

16.9X 

15.1mm 

1X 

15X 

17mm 

7.5X 

35mm 

22.5X 

11.3mm 

2X 

30X 

8.5mm 

15X 

17mm 

45X 

5.7mm 

3X 

45X 

5.7mm 

22.5X 

11.3mm 

67.5X 

3.8mm 

4X 

60X 

4.3mm 

30X 

8.5mm 

90X 

2.8mm 

5X 

75X 

3.4mm 

37.5X 

6.8mm 

112.5X 

2.3mm 

 

WF20X 

Field No. 13 

(Optional) 

# 620-425 

 

Does Not Accept 

Reticle Interpupillary 

Distance 

46~71mm 

 

.75X 

15X 

17.3mm 

7.5X 

34.7mm 

22.5X 

11.6mm 

1X 

20X 

13mm 

10X 

26mm 

30X 

8.7mm 

2X 

40X 

6.5mm 

20X 

13mm 

60X 

4.3mm 

3X 

60X 

4.3mm 

30X 

8.7mm 

90X 

2.9mm 

4X 

80X 

3.3mm 

40X 

6.5mm 

120X 

2.2mm 

5X 

100X 

2.6mm 

50X 

5.2mm 

150X 

1.7mm 

 
 
 
 
 
 
 
 
 
 
 
 

Summary of Contents for 425 Series

Page 1: ...ts Inc 6508 Tri County Parkway Schertz Texas 78154 Phone 210 590 9010 Fax 210 590 1104 INSTRUCTIONS FOR 425 425T SERIES STEREOSCOPIC ZOOM MICROSCOPES Copyright 5 26 09 National Optical Scientific Instrument Inc A Member of the Motic Group ...

Page 2: ...y Locking Support Collar Post Intensity Control for both illuminators Incidental top and Transmitted bottom Light Switches Knurled Diopter Adjustment on both eyepieces Head Head Locking Screw Knurled Cover Ring Incidental Illuminator Top Light Beam Adjustment Screw Main Power Switch Stage Clips Stage Plate Base Power Jack Illustrated Model 425T 440PLL 10 Prism Housing Trinocular Port ...

Page 3: ... service If it becomes necessary to ship the microscope for any reason pack it in the original boxes and then pack these boxes in outer corrugated shipping container for optimum protection Use of the inadequate packing will not provide adequate protection in transit and will void your warranty ASSEMBLY Place the microscope post stand on a flat stable and clean surface 1 Mounting the focusing assem...

Page 4: ...ation markings are located on right knob is positioned at the black index dot on head Lower magnifications have larger fields of view making it easier to position and locate area to be viewed B Place a flat object or specimen slide cover glass up on stage plate C Position focusing knobs in the center of focusing range D The height of viewing head can be adjusted up or down on the post in order to ...

Page 5: ... Accepts Reticle 24 95mm O D Interpupillary Distance 49 74mm 75 7 5X 30 7 3 8X 61 3 11 3X 20 4mm 1X 10X 23mm 5X 46mm 15X 15 3mm 2X 20X 11 5mm 10X 23mm 30X 7 7mm 3X 30X 7 7mm 15X 15 3mm 45X 5 1mm 4X 40X 5 8mm 20X 11 5mm 60X 3 8mm 5X 50X 4 6mm 25X 9 2mm 75X 3 1mm WF15X Field No 17 Optional 615 425 Does Not Accept Reticle Interpupillary Distance 47 72mm 75X 11 3 22 7mm 5 6X 45 3 16 9X 15 1mm 1X 15X 1...

Page 6: ...ra onto threads of video adaptor Locate knurled screw c located at the front of trinocular port on head Turn knurled locking screw in a counter clockwise direction to loosen screw and to permit removal of black plastic disk covering trinocular port Insert video adaptor tube into trinocular port If adapter does not insert easily further loosen knurled screws at side of port until adaptor tube drops...

Page 7: ... illuminator base to the microscope pole base B Carefully unplug the LED top light connector attached to socket marked LED from circuit board C Carefully unplug the LED bottom light connector attached to socket marked LED from circuit board D Using a 5 5mm hex nut driver remove two nuts from the 3mm screws securing light bracket to black base tray E Using a Phillips screw driver remove three each ...

Page 8: ...this microscope are warranted from date of purchase as follows Camera 1 year limited warranty Manufacturer warrants camera to be free from defects in material and workmanship under normal use and service for 1 year from date of purchase It does not cover damage resulting from abuse or misuse repairs or alterations performed by other than the manufacturer or damage occurring in transit Software 90 ...

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