A pantometer is a device used in surveying to measure horizontal angles between two points. Synonyms for pantometer include transit theodolite, theodolite, and surveying angle measuring instrument. The transit theodolite measures angles of elevation and depression for objects, whereas theodolite measures horizontal and vertical angles only. Surveying angle measuring instrument is a generic term for any device that can measure the angle between two points, including pantometers. The word pantometer comes from the Greek words panto meaning all and metron meaning measure, indicating the device's ability to measure all angles. Overall, these synonyms indicate precise instruments used in surveying and measuring angles in construction, navigation, and engineering disciplines.