±2% full scale (F.S.) (iron-vane), ±3%rectifier) ±2%F.S.; Compensated meters:±3%F.S. Models 57, 59, 157 Iron-vane, magneticallydamped Wattmeters: Dynamometer All others: Annular, rectifier type,elf-shielding Pivot and jewel; “T” styles: tautband ±3% Calibration is unaffected by magnetic panelmounting 1.5 seconds maximum 10 times F.S. 1.5 times F.S. 2%, tautband: .5% Sharp clear scale. Each dial arc is calibrated totrack the specific type of movement used ±15% of meter impedance Spade pointer with black, mattefinish Models 177 & 157: 1.6”(40.6mm) Models 147, 127 & 127T: 1.8”(45.7mm) Models 57 & 77: 2.3”(58.4mm) Models 27, 27T, & 47: 2.5”(63.5mm) Models 59 & 79: 3.50”(89.0mm) Models 29, 29T, & 49: 3.9”(99.0mm) Models 57 & 157: 5oz(0.14kg) Models 127, 127T & 147: 7oz(0.20kg) Models 27, 27T, 47 & 59: 8oz(0.23kg) Models 77 & 177: 9oz(0.26kg) Models 29, 29T & 49: 11oz(0.31kg) Model 79: 12oz(0.34kg) |