31. I do have a voltmeter though. 32. Edison devised a circuit where his modified light bulb effectively replaced the resistor in a DC voltmeter . 33. Part of the problem of making an accurate voltmeter is that of calibration to check its accuracy. 34. URM-25x models also contain an internal VTVM ( vacuum tube voltmeter ) and crystal calibration. 35. You can leave the voltmeter connected across the battery / capacitor combination to monitor the buildup of voltage. 36. The linear scaling of the output thresholds makes the device usable, for example, as a voltmeter . 37. One of the most celebrated was a compensating voltmeter that was awarded the John Scott Medal by Philadelphia. 38. Next, a voltmeter was produced _ and, in fact, registered no response from the power adapter. 39. This definition is practical since a real voltmeter actually measures this work, not a difference in electric potential. 40. A moving coil galvanometer can be used as a voltmeter by inserting a resistor in series with the instrument.
