D-660 TWO AXIS AUTOCOLLIMATOR
The Model D-660 Two Axis Autocollimator is capable of repeating angular measurements to ±0.1 arc second.
- Separate readout dial for each axis
- Standard 2.249" diameter barrel
- Certification of accuracy traceable to NIST
The Model D-660 Two Axis Autocollimator's two micrometer readout dials are independent of each other and have their own eyepieces for reading the scales. The standard 2.24" diameter barrel makes interchanging this instrument with other mounts or using V-blocks easy. With the Model D-165 High Intensity Light Source, fiber Light Guide and Adaptor the Model D-660 can be used for measuring uncoated parts.
The Model D-660 Two Axis Autocollimator measures angles around an X-Y axis or intermediate points between obliquely tilted surfaces.
The basic function of an autocollimator is to detect and measure a deviation in the position of a reference reflective surface. The autocollimator projects a collimated beam of light onto a reflective surface. When a deviation in the position of that reflective surface occurs, a deviated beam of collimated light returns to the autocollimator. A direct angular reading autocollimator, such as the Model D-660 Two Axis Autocollimator, will provide a direct angular measurement of the reflective surface deviation through acquisition and measurement of the deviated return beam angle.
For more theory of operation, please refer to the Principles of Autocollimation Application Note.
|Sensitivity:||0.1 arc sec|
|Accuracy:||0.5 arc sec over any 1 min increment. ±2.0 arc sec over the total 10 min measuring range|
|Measuring range:||10 arc min ±5 ft (±1.5 m)|
|Dial scale:||One revolution equals 60 arc sec graduated to 0.1 arc sec|
|Effective Focal Length:||43 inch (1,092 mm)|
|Reticles:||30 arc sec increments numbered 0-10 arc min. Projected reticle is filer/bifilar (dark line, bright field)|
Incandescent lamp with D-416, 6 VDC variable power supply 110V/ 60Hz or 220V/ 50Hz
|Overall Dimensions:||Height:||4.15 inch (105 mm)|
|Width:||4.15 inch (105 mm)|
|Length:||18.75 inch (476 mm)|
|Barrel Diameter:||2.249 inch (57 mm) made from steel with hard chrome plate (designed to fit NAS-900)|
|Aperture:||1.8 inch (46 mm)|
|Height to Aperture Center:||1.32 inch (34 mm)|
|Barrel:||Hard Chrome plate|
|Weight:||13 lbs (5.9 kg)|
|Shipping Weight:||24 lbs (10.9 kg)|
Model D-165 High Intensity Light Source. This option may be required when autocollimating off of low reflectivity surfaces or small mirrors.
Model D-247 Table Instrument Stand
Model D-254 Adjustable Instrument Stand
Model D-276 Adjustable Instrument Stand
Model D-277 Adjustable Instrument Stand
Model D-295 Adjustable Instrument Stand