空氣測微儀是一種數字精密對比測量儀，利用空氣動力學原理，利用高壓空氣的背壓（差壓）和微小的位移量。
與傳統型號相比，可以更高精度測量產品公差更窄的檢測，並且可以快速讀取實際測量值。
放大倍率是固定型，測量範圍是10,20,50,100,200μm，是5種陣容。
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機床規格:
| code No. | Model | Measurement Range | Display Resolution |
| 92001001 | ad-LF10 | 0.010mm | 0.0001mm |
| 92002001 | ad-LF20 | 0.020mm | 0.0002mm |
| 92005001 | ad-LF50 | 0.050mm | 0.0005mm |
| 92010001 | ad-LF100 | 0.100mm | 0.0010mm |
| 92020001 | ad-LF200 | 0.200mm | 0.0020mm |
| LED Bar Graph | 41dot |
| Digital Display | TFT Color LCD |
| Auto Mastering Range | Master Max•Master Min ±50% |
| Output Interface | RS485 |
| Rank Function | Max 100 rank |
| Dimension | Width | Depth | Height | Weight |
| 55mm | 130mm | 400mm | 2.4kg | |
| Power Supply | DC9V (With AC adapter for 100V~240V | |||
| Voltage variation rate | within ±10% | |||
| Frequency | 50Hz/60Hz | |||
| Current consumption | 0.18A (MAX) | |||
| Air Pressure | 350~700kpa | |||
| Operating Temperature | 0~40oC | |||
| Range | Standard Performances | ||||
| 10 µm | 20 µm | 50 µm | 100 µm | 200 µm | |
| Instrumental error | 0.2 µm | 0.4 µm | 1.0 µm | 2.0 µm | 4.0 µm |
| Repeatability | 0.2 µm | 0.2 µm | 0.5 µm | 1.0 µm | 2.0 µm |
| Stability of indication | 0.2 µm | 0.2 µm | 0.5 µm | 1.0 µm | 2.0 µm |
| Response Time | Max 1.5sec | Max 1.2sec | |||
| Effective indication Range | 10 µm | 20 µm | 50 µm | 100 µm | 200 µm |
