1930 Approximate
1930s Portable Induction Test Meter. Material: plastic, metal, glass. Size: 6" W. x 8 3/4" H. x 7 1/2" D. Description: black metal box; silver latch on front; lid at top; metal plate on outside of box: "Portable Watthour Meter Standard, No. 15358215, Type IB-8, Amp. 1-5-10-50-100, Volts 115-230, Cyc. 60, General Electric Co., USA"; Portable Induction Test Meter instructions listed inside top lid; note stating that this unit is 1/4% slow at 20 revolutions; nine black knobs on top; four white buttons "10A, 1A, 230, 115"; glass covered circular gauge in center; "Revolutions, General Electric"; dial numbered 0-9; two smaller dials below; 100 and 10 numbered 0-9; two open ports on right side of box; silver metal knob on each side of box.
Used by the City of Waseca in 1930s. Found in the attic at Waseca City Hall, 508 South State Street, Waseca, MN. An electricity meter or energy meter is a device that measures the amount of electric energy consumed by a residence, business, or an electrically powered device. Electricity meters are typically calibrated in billing units, the most common one being the kilowatt hour. Periodic readings of electric meters establishes billing cycles and energy used during a cycle.