Artifact Details Title Ampex frequency-wavelength calculator Catalog Number 102793029 Type Physical Object Description The object has an internal sliding scale. One side is labeled "Frequency-Wavelength Calculator." The other side has a table that shows the complete line of Ampex Instrumentation tapes. Date Circa 1963 Manufacturer Ampex Corporation Place Manufactured U.S. Dimensions overall: 1/8 in x 6 3/8 in x 3 1/8 in Credit Gift of Christopher Garcia Lot Number X9149.2020