Ec+o six coaxial voltmeters, model no lt101 dc voltage range 0.10 to 0.25 volts, model no lt102 dc voltage range 0.50 to 1.40 volts, model no lt103 dc voltage range 1.10 to 3.30 volts, model no lt104 dc voltage range 1.90 to 5.20 volts, model no lt105 dc voltage range 3.60 to 10.4 volts, model no lt106 dc voltage range 7.4 to 20.4 volts, all operate on frequency range of dc to 100 mhz, sensitivi type 200 ohms per volt except for lt101 which is 100 ohms per volt
