Vintage Manual Sonometer ducks it does exhibit some wear

it does exhibit some wear and patina

MM - 301242 - 032323

Exhibits moderate signs of wear including stains and rust

Antique wooden well bucket featuring the traditional look found in similar Southern Chinese water buckets

MM - C-6455 - 120423

Vintage Manual Sonometer ducks it does exhibit some wearc. 1950s 1960s; W. M. Welch Scientific Co. Chicago Hand crank sonometer, a musical and scientific laboratory instrument used to measure musical instrument string tension and wave mechanics. It works as such (from NYU): The sonometer lays flat on a large surface. There is a meter stick attached for reference. Strum the strings freely or hold down the string in different positions like a capo, to achieve different notes. Strike the tuning fork and strum