Manual Tabletop heliodons are used for sun shading analysis at any given latitude and at any time. The model support platform is mounted on a conventional table or desk. It can rotate and tilt a scaled architectural model. These heliodons are manually operated without the use of computers and provide good accuracy. The model stand, mounted on the table, is tilted for latitude and rotated to get the time of the day. For replicating the time of the year, the single light source uses a ribbon marked with months of the year and attached to the edge of the door. The device can be used in interior spaces with lamps and exterior spaces with direct sunlight for better accuracy. While using outdoors, a sundial controls the tilt and rotation of the model stand. The main advantage is its affordability and small size. The heliodon is accurate when utilized by people who are already aware of solar geometry. But not good for learning solar geometry and the basic principles of solar responsive design.
