Exhibit 237 is one of a series of shunts for the Mavometer (a primitive type of multimeter for measuring currents, voltages and resistances). This one extends the full scale range from 1 mA to 10 milliampere. It is conserved in a velvet lined box with a wood divider along with several other shunts.
ISCRIZIONI
Inciso sulla parete di metallo: "ORIGINAL - GOSSEN ¶ D.R.G.M. ¶ 10 mA ¶ D.R.P.a."