Elenco Electronics LP-560 Logic Probe<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Logic Probe provides convenient and precise measurement of logic circuits</li><li>Displays logic levels (high or low)， pulses and voltage transients down to 25 nanoseconds</li><li>Tests all logic families (TTL，LSI， CMOS， ECT)</li><li>Captures pulses to 25ns(20MHz)， plus more features</li><li>For more than 30 years Elenco has been producing reliable as well as affordable electronic test equipment， tools， and educational kits</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41K1rTQe32L.jpg" noproxy>