Vibrating wire device, No. L-30.000, with lid that is fitted with ‘inspection’ windows, with separate glass prism on steel mount with three brass machine screws, and spare mirror, by Cambridge Scientific Instrument Company Ltd., England Vibrating wire device, No. L-30.000, with lid that is fitted with ‘inspection’ windows, with separate glass prism, and spare mirror
Vibrating wire device, No. L-30.000, by Cambridge Scientific Instrument Company Ltd., England Vibrating wire device
