Sound level calibrator; Range:1000Hz; 5%; 340g
声级/分贝计 用于测量 声音 包括 电池，校准证书，箱子，螺丝刀
得捷: SOUND LEVEL CAL. W/NIST 407744
贸泽: Audio/Video Test Equipment SOUND LEVEL CAL. W
TME: Sound level calibrator; Range:1000Hz; 5%; 340g
Instruments Extech
TE Connectivity 泰科
3M