Velleman-Handheld-Pocket-Scope-Velleman-HPS140I-The-HPS140I-Handheld-Pocket-Oscilloscope-from-Velleman-may-look-tiny-but-it-packs-plenty-of-power-making-this-an-indispensable-piece-of-equipment-for-anyone-from-the-hobbyist-to-the-professional-user-Velleman-HPS140I-Handheld-Pocket-Scope-10 Mhz-40 Ms-s-Probe-Included-