The jacks are similar, but they will benefit from being arranged back to back, since the two [bass] octaves take as much space as four in an ordinary harpsichord Prior to 1980 when Keith Hill introduced his design for a pedal harpsichord, most pedal harpsichords were built based on the designs of extant pedal pianos from the 19th century, in which the instrument is as wide as the pedalboard.
Heavy-duty steel shelving of 18-gauge or lower is generally recommended for records. storage. The smaller the gauge number, the stronger the shelving; thus 16-gauge or 12-. gauge steel shelving is also appropriate. Shelving higher than 18-gauge is weaker and. may not be appropriate for records storage.
For example, a mattress with 250 coils that are made with the same gauge steel as a mattress with 150 will likely be a little more firm. However, if the 250 coils are made with higher gauge (thinner) steel than the 150 coils in the other mattress, there may be virtually no difference.