Aven Tools 26800B-517 74mm Microscope Focus Mount with Coarse and Fine Adjustment
Aven Tools 26800B-517 74mm Microscope Focus Mount with Coarse and Fine Adjustment
The Aven Tools 26800B-517 is a 74 mm microscope focus mount for compatible SSZ, SPZ, DSZ and NSW series bodies. Its precision rack-and-pinion mechanism provides coarse and fine adjustment with tension control and 50 mm vertical focusing travel. Use the coarse knobs to bring the specimen into view, then fine-tune focus for detailed inspection in your compatible stand setup.
Best Uses / Applications
- Adding coarse and fine focusing to a compatible microscope stand.
- Replacement focus-mount assemblies for supported Aven microscope bodies.
- Electronics assembly and quality-control inspection requiring precise focus adjustment.
- Custom microscope setups with verified body and post compatibility.
Key Features
- 74 mm microscope mounting ring.
- Compatible with SSZ, SPZ, DSZ and NSW series microscope bodies.
- Precision rack-and-pinion mechanism with tension control.
- Coarse and fine focus adjustment knobs.
- 50 mm vertical focusing travel.
- 26.9 mm mounting/end-hole diameter.
- Included reducer ring for mounting on a 25 mm post.
- Included tension-control adjustment pin.
Technical Specifications
| Specification | Detail |
|---|---|
| Brand / SKU | Aven Tools / 26800B-517 |
| Product type | Microscope focus mount |
| Focus mount ring diameter | 74 mm |
| Mounting / end-hole diameter | 26.9 mm |
| Focus mechanism | Rack and pinion with tension control |
| Focus adjustment | Coarse and fine |
| Vertical focusing travel | 50 mm |
| Accepted microscope bodies | SSZ, SPZ, DSZ and NSW series |
| Reducer ring | Included for a 25 mm post, per Aven's description |
| Package contents | One focus mount and adjustment pin for tension control; reducer ring also identified in the description |
| UPC | 766955372226 |
Choosing a Focus-Mount Configuration
| Option | Selection consideration |
|---|---|
| This standalone focus mount | Coarse/fine focusing when you already have a compatible post or arbor. |
| Focus mount with tiltable arbor | Consider when the setup also needs microscope-body tilt and an arbor connection. |
| Focus mount with integrated LED ring light | Consider when illumination is needed as part of the mounting assembly. |
Frequently Asked Questions
Which microscope bodies does it accept?
Aven lists SSZ, SPZ, DSZ and NSW series microscope bodies. Verify the fit of your exact body against the 74 mm mounting ring.
Does it have both coarse and fine focus?
Yes. The focus mount has coarse and fine focus knobs with a rack-and-pinion mechanism.
How much focusing travel is available?
Aven specifies 50 mm of vertical focusing travel. This is mount travel, not the microscope's optical working distance.
Can it mount on a 25 mm post?
Aven's description states that a reducer ring for a 25 mm post is included. The mount's end-hole diameter is 26.9 mm.
What is included?
The specification lists a focus mount and tension-control adjustment pin. The description also identifies the reducer ring.
Does this include a tiltable arbor, light or stand?
Those components are not listed as included with the 26800B-517. This is the standalone focus mount, distinct from the combined focus-mount and tiltable-arbor assembly.
How is focus tension controlled?
The mechanism includes tension control, and Aven supplies an adjustment pin for that purpose. Follow the manufacturer's setup instructions for your assembly.
California Proposition 65 Warning
This product can expose you to chemicals including Diisononyl Phthalate (DINP), which is known to the State of California to cause cancer. For more information, visit www.P65Warnings.ca.gov.
Related Inspection Resources
Explore the Optical Inspection & Magnification Resource Hub, browse Inspection Microscopes, or shop the Aven Tools collection.
