
FSB (1X), (2X), (3X), (4X), (1X-2X), (2X-4X) Fixed and Dual Power Stereo Binocular Microscope
The Unitron FSB (1x), FSB (2x), FSB (3x), FSB (4x), FSB (1x-2x) and FSB (2x-4x) Fixed and Dual Power Stereo Binocular Microscopes give the versatility where there is only occasional need to change magnifications. Widefield high eyepoint 10x eyepieces are suppplied standard. To extend the range of total available magnifications or to change working distance, different power accessory eyepieces and lens attachments are offered. Total magnifications, fields of view, and working distances are shown in the charts below.
Optical Body
45 degree comfortably inclined binocular eyepiece tubes with interpupillary adjustment 48-80mm, with one diopter adjustment, +_5. Coated prism system and convergent optical systems at 12 degree angles, erect, unreversed images, body rotates 360 degree .
Eyepieces
Paired coated widefield high eyepoint HWF10x with eyeguards. Designed to accept accessory reticles.
Stand
Stand with large flat stage (drilled and tapped on underside to accept accessory transmitted light base). Stage insert plate, black/white reversible. Stage clips. Heavy duty vertical support rod 24.5mm diameter with key way (threaded to accept accessory extension rod for long working distances), ring clamp with lock screw.
Arm and Focusing
Heavy stable support arm with lockscrew to position 360 degree rotatable optical body; with port and adjustable mount to accept accessory spotlight illuminator. Precise rack and pinion focusing mechanism with large knobs and adjustable tension control. Entire are-focusing mechanism with positive acting lockscrew to adjust up-down on vertical post of stand.
Models
15224 (total power 10x)
FSB (1X) Fixed Power Stereo Binocular Microscope with 1x objectives complete as described above.
15225 (total power 20x)
FSB (2X) Fixed Power Stereo Binocular Microscope with 2x objectives complete as described above.
15226 (total power 30x)
FSB (3X) Fixed Power Stereo Binocular Microscope with 3x objectives complete as described above.
15227 (total power 40x)
FSB (4X) Fixed Power Stereo Binocular Microscope with 4x objectives complete as described above.
15209 (total power 10x and 20x)
FSB (1X - 2X) Fixed Dual Power Stereo Binocular Microscope with 1x-2x objectives as described above.
15210 (total power 20x and 40x)
FSB (2X - 4X) Fixed Dual Power Stereo Binocular Microscope with 2x-4x objectives as described above.
Accessories
A complete range of accessories is available.



| Optical
Data for the Dual FSB (1x-2x) Stereomicroscope |
| Objective |
Aux. Lens |
Working
Distance (mm) |
EYEPIECES 10x |
EYEPIECES 15x |
EYEPIECES 20x |
| Mag |
Field (mm) |
Mag |
Field (mm) |
Mag |
Field (mm) |
| FSB 1x |
NONE |
106 |
10x |
24.0 |
15x |
15.0 |
20x |
11 |
| 0.5x |
267 |
5x |
63.0 |
7.5x |
41.0 |
10x |
32.5 |
| 0.75x |
144 |
7.5x |
35.4 |
11.25x |
23.0 |
15x |
17 |
| 1.5x |
54 |
15x |
14.5 |
22.5x |
9.0 |
30x |
7 |
| 2.0x |
36 |
20x |
10.5 |
30x |
7.0 |
40x |
5 |
| |
| FSB 2x |
NONE |
106 |
20x |
11.5 |
30x |
7.5 |
40x |
5.5 |
| 0.5x |
267 |
10x |
32.0 |
15x |
20.0 |
20x |
17.0 |
| 0.75x |
144 |
15x |
17.5 |
22.5x |
12.0 |
30x |
9.0 |
| 1.5x |
54 |
30x |
7.0 |
45x |
4.5 |
60x |
3.25 |
| 2.0x |
36 |
40x |
5.0 |
60x |
3.25 |
80x |
2.5 |
|
| Optical
Data for the Dual FSB (2x-4x) Stereomicroscope |
| Objective |
Aux. Lens |
Working
Distance (mm) |
EYEPIECES 10x |
EYEPIECES 15x |
EYEPIECES 20x |
| Mag |
Field (mm) |
Mag |
Field (mm) |
Mag |
Field (mm) |
| FSB 2x |
NONE |
64 |
20x |
11.5 |
30x |
7.5 |
40x |
5.5 |
| 0.5x |
87 |
10x |
32.0 |
15x |
20.0 |
20x |
17.0 |
| 0.75x |
65 |
15x |
17.5 |
22.5x |
12.0 |
30x |
9.0 |
| 1.5x |
34 |
30x |
7.0 |
45x |
4.5 |
60x |
3.25 |
| 2.0x |
24 |
40x |
5.0 |
60x |
3.25 |
80x |
2.5 |
| |
| FSB 4x |
NONE |
64 |
40x |
5.5 |
60x |
3.5 |
80x |
3.5 |
| 0.5x |
87 |
20x |
8.5 |
30x |
5.75 |
40x |
4.0 |
| 0.75x |
65 |
30x |
7.0 |
45x |
4.5 |
60x |
3.2 |
| 1.5x |
34 |
60x |
4.0 |
90x |
2.5 |
120x |
2.0 |
| 2.0x |
24 |
80x |
3.2 |
120x |
2.0 |
160x |
1.5 |
|
| FSB Dual | FSB Single |
| Optical Data for the Single FSB (1x)
and FSB (2x) Stereomicroscope |
| Objective |
Aux. Lens |
Working
Distance (mm) |
EYEPIECES l0x |
EYEPIECES l5x |
EYEPIECES 20x |
| Mag |
Field (mm) |
Mag |
Field (mm) |
Mag |
Field (mm) |
| FSB 1x |
N0NE |
106 |
10x |
24.0 |
15x |
15 |
20x |
11.0 |
| 0.5x |
267 |
5x |
63.0 |
7.5x |
41 |
10x |
32.5 |
| 0.75x |
144 |
7.5x |
35.4 |
11.25x |
23 |
15x |
17.0 |
| 1.5x |
54 |
15x |
14.5 |
22.5x |
9 |
30x |
7.0 |
| 2.0x |
36 |
20x |
10.5 |
30x |
7 |
40x |
5.0 |
| |
| FSB 2x |
N0NE |
106 |
20x |
11.5 |
30x |
7.5 |
40x |
5.5 |
| 0.5x |
267 |
10x |
32.0 |
15x |
20 |
20x |
17 |
| 0.75x |
144 |
15x |
17.5 |
22.5x |
12 |
30x |
9.0 |
| 1.5x |
54 |
30x |
7.0 |
45x |
4.5 |
60x |
3.25 |
| 2.0x |
36 |
40x |
5.0 |
60x |
3.25 |
80x |
2.5 |
|
| Optical
Data for the Single FSB (3x) and FSB (4x) Stereomicroscope |
| Objective |
Aux. Lens |
Working
Distance (mm) |
EYEPIECES
l0x |
EYEPIECES
l5x |
EYEPIECES
20x |
| Mag |
Field (mm) |
Mag |
Field (mm) |
Mag |
Field (mm) |
| FSB 3x |
N0NE |
79 |
30x |
7.6 |
45x |
5 |
60x |
3.7 |
| 0.5x |
133 |
15x |
21.0 |
22.5x |
13 |
30x |
10.0 |
| 0.75x |
90 |
22.5x |
11.0 |
33.75x |
7 |
45x |
5.0 |
| 1.5x |
40 |
45x |
5.0 |
67.5x |
3 |
90x |
2.0 |
| 2.0x |
30 |
60x |
3.5 |
90x |
2.0 |
120x |
1.5 |
| |
| FSB 4x |
N0NE |
64 |
40x |
5.5 |
60x |
3.5 |
80x |
3.5 |
| 0.5x |
87 |
20x |
8.5 |
30x |
5.8 |
40x |
4.0 |
| 0.75x |
65 |
30x |
7.0 |
45x |
4.5 |
60x |
3.2 |
| 1.5x |
34 |
60x |
4.0 |
90x |
2.5 |
120x |
2.0 |
| 2.0x |
24 |
80x |
3.2 |
120x |
2.0 |
160x |
1.5 |
|
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All specifications subject to change without prior notice.
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