Heliochronometer (version 2) - World's Most Accurate Sundial
Description
PDFThis heliochronometer was constructed out of ABS plastic filament. To find out how to align & use your sundial check out: Heliochronometer - World's Most Accurate Sundial by yba2cuo3 | Download free STL model | Printables.com
Change History
Update (12-07-24): If you live in the southern hemisphere, make sure to use the southern hemisphere analemma design in addition to the southern hemisphere dial plate.
Update (01-02-25): As requested, please follow the new set of detailed setup instructions provided in the file section titled: How_to_Setup_your_Original_Heliochronometer_Sundial-Detailed-Instructions-v1
Curved vs. Flat Analemma Plates:
This model includes a flat plate analemma & fixed nodus. You may gain a bit more performance & reading accuracy from your heliochronometer if you adopt a curved plate design with a tilt adjustable nodus. If you prefer upgrading, check out my other Printables at:
- Curved Analemma Plate for a Heliochronometer Sundial by yba2cuo3 | Download free STL model | Printables.com
- New Larger Curved Analemma Plate with Tiltable Nodus for use with 3 Original Heliochronometer Sundial Designs by yba2cuo3 | Download free STL model | Printables.com
| Feature List Summary Table | Ver. 1 | Ver. 2 |
|---|---|---|
| Dial Plate Resolution | 15 mins | 5 mins |
| Secondary Vernier Scale Resolution | NA | 0-5 mins in increments of ½ min. |
| Time Reading Accuracy | < 5 mins | 1 min |
| Northern & Southern Hemisphere Compatible | Yes | Yes |
| Latitude Adjustment Resolution | 1 deg. | 1 deg. |
| Displays Standard Time | Yes | Yes |
| Standard Time Zone Meridian Offset Adjustable | Yes | Yes |
| Daylight Savings Time Adjustable | Yes | Yes |
| Various Base Options Available | Yes | Yes |
| Complexity of Construction & Alignment | Medium | High |
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Model origin
The author remixed this model.
Differences of the remix compared to the original
List of Upgrades in Ver. 2:
- Higher reading resolution dial plate; i.e. 5 minutes vs. original 15;
- Introduction of a secondary Vernier scale to the Alidade which allows time readings to within ½ minute. As in ver. 1, the accuracy will be determined by the quality of it’s construction, assembly and precision of it's final alignment;
- Improved Analemma curve resolution;
- Replaceable Nodus cone with smaller circular sight to improve reading resolution (or adopt your own custom design);
- Improved dial holder ends with better meridian marker and adaptable pedestal for tripod base;
- As in ver. 1, 4 base options are available; 3 with integrated magnetic compass and levels, and 1 without. See original model for the links.
- Added deeper cut mark versions for text, dial tick marks, etc. Look for the files with (deeper) in the name.