. "Roentgen" induction coils and other X-ray apparatus . Figure 2. Type A Coil for 20 or 110 volts Direct Current. This is the type of coil in most extensive use for X-Ray workand is operated on direct current, —either 20 \olts from battery ormotor-generator, or the commercial no volts. It has the Roentgen Self-Starting MecKanical In-terrupter, adjustable mica condenser and switches as describedunder Mechanical Interrupter and Condenser. The finish of the\vood-work is either mahogany or selected quartered oak, as desired. Prices. B3000. 18=inch Type A Coil for 20 volts D. C $ B3oor. i8=i
. "Roentgen" induction coils and other X-ray apparatus . Figure 2. Type A Coil for 20 or 110 volts Direct Current. This is the type of coil in most extensive use for X-Ray workand is operated on direct current, —either 20 \olts from battery ormotor-generator, or the commercial no volts. It has the Roentgen Self-Starting MecKanical In-terrupter, adjustable mica condenser and switches as describedunder Mechanical Interrupter and Condenser. The finish of the\vood-work is either mahogany or selected quartered oak, as desired. Prices. B3000. 18=inch Type A Coil for 20 volts D. C $ B3oor. i8=inch Type A Coil for no volts D. C B3002. i5=inch Type A Coil for 20 volts D. C B3003 I5=inch Type A Coil for no volts D. C B3004. 12-inch Type ««A Coil for 20 volts D. C B3005. i2=iiich Type *A Coil for no volts D. C James Q. Biddle, 1114 Chestnut Street, Philadelphia. Roentgen Induction Figure 3. Type A Coil With Table and Rlieostat Prices, B3006. 18=inch Type *«A Coil with table and rheostat for 20 volts D. C $ B3007. 18=inch Type *A Coil with table and rheostat for 110 volts D. C B3008. 15=inch Type A Coil with table and rheostat for 20 volts D. C B3009. 15=inch Type A Coil with table and rheostat for 110 volts James Q. Biddle, 1114 Chestnut Street, Philadelphia. Roentgen Induction Coil.
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