Sound Level Tester 测音器
 Sound Level Tester 测音器  Swiftlet House Electronics Accessories 燕屋电子设备 Swiftlet Farming Accessories 燕屋专用配件   Supplier, Suppliers, Supply, Supplies | Nest Tech System Sdn Bhd
Sound Level Tester 测音器 

声音计级器是一种用于测量声音的仪器。
 
Able to measure actual sound level (dB)
Switch To Desktop Version