The Model 1400 is a valuable service aid for in-circuit testing of all types of capacitors, from the smallest ceramic types to large electrolytics. The 1400 will check for open or shorted capacitors without the necessity of removing them from the circuit. Capacity values are measured in-circuit on all popular electrolytic capacitors. An important feature of the electrolytic test, not found in other instruments sold even at much higher prices, is the low test voltage that protects the low-voltage electrolytics used in transistor radios. Many of these small electrolytic filters are rated as low as 3 working volts D.C. The Model 1400 tests these and all others with perfect accuracy with no chance of damage. SPECIFICATIONS Shorts Test — Effective in-circuit with shunt resistance as low as 6 ohms. Open Test — Effective on all capacitors in-circuit down to capacitors as small as 7 mmfd. Electrolytic Test — Values of electrolytic capacity found in-circuit over the range of 2 Mfd. to 450 Mfd, Indicator — EM84 ultra-modern bar indicator tube. Simple instructions printed right on the instrument panel for accurate interpretation of all test results. Power Supply — Line isolated with special low voltage for electrolytic test. Case — Smart modern styling in Mercury’s exclusive metal case design. Compartment for coaxial cable and cheater line cord ensures convenient, safe storage.