| Technical Data | NA720 | NA724 | NA728 | NA730 |
| Magnification | 20× | 24× | 28× | 30× |
| Telescope Image | Upright |
| Gas Filled | Yes |
| Diameter of objective | 30mm | 36mm | 40mm | 40mm |
| Shortest focusing distance | 0.5m | 0.5m | 0.5m | 0.7m |
| Angle Measurement | 360degree/400gon Selectable |
| Distance Measurement | |
| - Multiplication Factor | 100 |
| – Additive Constant | 0 |
| Circular Bubble | 10' / 2mm |
| Focus Drive | rough | rough/fine |
| Horizontal Drive | both sides, endless |
| Accuracy (Standard deviation) |
| Per km double-run | 2.5mm | 2mm | 1.5mm | 1.2mm |
| Single measurem. with 30m target dist. | 1.5mm | 1.2mm | 1mm | 0.8mm |
| Compensator |
| Setting Accuracy (Standard deviation) | < 0.5" | < 0.3" |
| Working Range | ±15' |
| Environmental |
| Impact | ISO 9022-33-5 |
| Water and Dust Resistance IP57 | (immersion) IP57 |
| Temperature Range |
| – Operation | –20 to +50 |
| – Storage | –40 to +70 °C |
| Dimensions, Weight |
| Instrument Dimensions | 19×12×12cm | 21×12×12cm |
| Instrument Weight | 1.6kg | 1.7kg |
