Here is the instrument that is completely changing the picture in tube testing. With the FAST-CHECK you can forget about hit and miss substitution methods of tube testing ... do away with complicated and time-consuming multiple switch and roll charts. Just two settings enable you to make a complete tube test in seconds ... giving you an immediate reading of quality, shorts, gas content and life expectancy of over 700 tube .types including picture tubes, the newest series-string TV tubes, 0Z4’s, gas regulators, tuning eye indicators, special purpose HI-FI tubes and even foreign tubes. With the FAST-CHECK you will welcome the opportunity to check tubes, for the test time is reduced to less than 10 seconds. To test any tube, you simply set only two controls, insert the tube in the proper socket and press the test button. That's all there is to it! You’ll find you actually spend less time on each call and make more money, and equally important, your swiftness and sureness in testing tubes will impress your customers with your ability. Their confidence in you will result in more recommendations and increase your good will tremendously. The FAST-CHECK will enable you to locate those hard-to-detect weak tubes, reducing the possibility of non-profit able call-backs. You can also increase your earnings and sell more tubes by showing your customer the actual condition and life expectancy of the tube on the large three color meter. A very important question most likely in your mind is “Will the FAST-CHECK become obsolete as new tube types come out?" The answer to this is “No"! The circuitry of the FAST-CHECK has been engineered to provide for all the possible combinations of pin connections of future tube types, In addition, new tube listings will be furnished at no charge as soon as new tube types are introduced. This will keep your FAST-CHECK right up-to-the minute at all times.