Instrument #401, hand engraved aluminum and ink.
Instrument #402, hand engraved aluminum and ink.
Instrument #403, hand engraved aluminum and ink.
Instrument #404, hand engraved aluminum and ink.
Instrument #405, hand engraved aluminum and ink.
Instrument #406, hand engraved aluminum and ink.
Instrument #407, hand engraved aluminum and ink.
Instrument #408, hand engraved aluminum and ink.
Instrument #409, hand engraved aluminum and ink.
Instrument #410, hand engraved aluminum and ink.
Instrument #411, hand engraved aluminum and ink.
Instrument #412, hand engraved aluminum and ink.