Wandel & Goltermann SPM-19 Level Meter Teardown | Dave Jones | Flickr
선택레벨메터) Wandel and Goltermann SPM-19 Selective Level Meter – 근대통신박물관
WANDEL-GOLTERMANN SPM-19 SELECTIVE LEVEL METER 50HZ-25MHZ DESCRIPTION BN-829-01 BN-829-02 SM Service Manual download, schematics, eeprom, repair info for electronics experts
Wandel - Goltermann SPM19 for Sale|Selective Level Meters|Meters|Test Equipment Center