Land Distance Area Survey GPS Land Measuring Instrument
Product Function Introduction:
| Model: Functions:  |  			S3 | S4 | 
| Positioning accuracy | 2.5m | 2.5m | 
| Initial barometric calibration | × | √ | 
| Normal area measurement | √ | √ | 
| Mountain area measurement | × | √ | 
| Intell. Slope measurement | × | √ | 
| Fixed point measurement | √ | √ | 
| Fixed width area measurement | √ | √ | 
| Normal distance measurement | √ | √ | 
| Manual distance measurement | √ | √ | 
| Altitude display | √ | √ | 
| Altitude measurement | √ | √ | 
| Track display | √ | √ | 
| Mu setting | √ | √ | 
| Unit setting | √ | √ | 
| Time display | √ | √ | 
| Data statistics | √ | √ | 
| Historical record | √ | √ | 
| Lighting /Currency detection | √ | √ | 
| Dry battery | √ | √ | 
| lithium battery | √ | √ | 
| Data storage | 200 | 200 | 
| Voice broadcast | √ | √ | 
| Data export | × | √ | 







