Photogrammetric Plotting Autographic Instrument

Photogrammetric Plotting Autographic Instruments are specialized tools used in the field of photogrammetry, which is the science of making measurements from photographs. These instruments are specifically designed for plotting and analyzing data obtained from aerial photographs.

The main purpose of a Photogrammetric Plotting Autographic Instrument is to accurately measure and record the positions, elevations, and other relevant information of objects or features captured in aerial photographs. These instruments are typically used in mapping, surveying, and other geospatial applications.

Some common features of Photogrammetric Plotting Autographic Instruments include:

1. Stereoscopic Viewing System: These instruments are equipped with a stereoscope or a binocular viewing system that allows the user to view and analyze overlapping pairs of aerial photographs. This helps in creating a three-dimensional perception of the terrain or objects being studied.

2. Measuring Scales: Photogrammetric Plotting Autographic Instruments have built-in measuring scales that enable precise measurements of distances, angles, and elevations on the aerial photographs. These scales are calibrated to ensure accurate readings.

3. Plotting and Recording Mechanisms: These instruments have mechanisms for plotting and recording the measured data onto a map or a drawing. This can include features like a digitizer tablet or a mechanical plotting arm that allows the user to trace and transfer the measurements onto a paper or digital format.

4. Coordinate Systems: Photogrammetric Plotting Autographic Instruments often have built-in coordinate systems that help in accurately referencing the measured data to a specific geographic location. This allows for the creation of accurate maps and spatial datasets.

Overall, Photogrammetric Plotting Autographic Instruments are essential tools for professionals working in the fields of mapping, surveying, and geospatial analysis. They enable precise measurements and analysis of aerial photographs, leading to the creation of accurate maps and spatial data.