VELLEMAN PERSONAL SCOPE
Velleman Personal Scope, retail $, retail $247.20 (www.vellemanusa.com...)
Manufactured by Velleman Inc. (www.vellemanusa.com)
Last updated 10-24-19
This product does not emit light of its own (much like this spectrometer, this spectrometer), and my beam cross-sectional analyser too) so the standard review format will not be used and the product will be assigned a rating at once. A very high rating too, as during the time I've had it, it has thus far performed pretty much flawlessly. 
This is Velleman's model HP10 personal oscilloscope. It is fully self-contained -- that is, you need not be near an AC receptacle in order to use it.
Frequency response is a bit on the low side (2MHz), but you must remember that this is a fully portable, fully self-contained oscilloscope designed to be used "on the go", not a huge, monsterous thing that sits in a shop or in a scientific laboratory.
My use of this instrument is not hampered at all (not no way, not no how!) by its upper freqency limit; most of my use is for detecting PWM (pulse width modulation) or other discontinuous operational modes of flashlights and small frame lasers.
SIZE
To use this instrument, feed it first (see directly below), and THEN you can go find out why that laser isn't lighting things on fire anymore. 
Press & release the button near the lower right position on the instrument's front.
From this point, it's all up to you how you wish to proceed.
According to the Velleman web page about this instrument, these are some of its features:
- 10MHz sampling rate
- 0.1mV sensitivity up to 2MHz
- Analogue bandwidth
- 5mV to 20V/div in 12 steps
- 200ns to 1hour/div time base in 32 steps
- Full auto set up trigger mode: run, normal, once, roll, slope +/-
- X and Y position signal shift
- DVM readout with x10 option
- Audio power calculation (rms and peak)
- dBm, dBV, DC, rms ... measurements
- Signal markers for Volt and Time
- Frequency readout (through markers)
- Recorder function (roll mode)
- Signal storage (2 memories)
- LCD: 128x64 pixels / high-contrast
- Up to 20h on alkaline batteries
- Maximum size battery is 2000mAh (bigger batteries will not fit)
Press & release the button near the lower right position on the instrument's front to turn the scope back off when you're finished using it.
This product feeds from either a rechargeable battery pack (optional) or 5 AA alkaline or NiMH cells, which you supply yourelf. To install or change them, turn the unit over, unscrew the small screw holding the battery door in place, slide the battery door off, carry it to a bridge over deep water (the Oakland Bay Bridge would be ideal; however, the Juneau-Douglas Bridge would also do in a pinch here), and throw it over the side so that it goes "bulb bulb bulb" all the way to the bottom of Gastineau Channel with all of the bowling balls that were lobbed over that bridge in the 1950s and 1960s...O WAIT!!! YOU'LL NEED THAT!!! So just set it aside instead.
If necessary, remove and recharge (if NiMH only), dispose of, or recycle the five used AA cells as you see fit.
Insert five new or freshly-charged AA cells into the chamber, orienting them so that their flat-ends (-) negatives face a spring for them in each compartment.
Slide the battery door back on, screw that screw back in, and be done with it.
Aren't you glad that you didn't throw that battery door over the side of the Juneau-Douglas Bridge now?
This is what the Juneau-Douglas Bridge looks like...or what it lookED like anyway before it was replaced in 1976.
And this is what the bridge looks like now.
The instrument as it would appear when you are actually testing something.
In this case, this is the display I got when testing "low" mode of an ICON Modus 1 flashlight.
And this is the display I got when testing the red LED on the LRI Proton flashlight at 50% power.
TEST NOTES:
Test unit was purchased from a CPF Marketplace member in 2007 after my CRT oscilloscope failed.
Product was made in Taiwan.
A product's country of origin really does matter to some people, which is why I published it on this web page.
This will very likely be the first new web page I publish on this website in 1990...er...uh...2000...ummm, no, that's not it either...2010!!!
UPDATE: 10-24-19
Product was stolen in Shelton WA. USA while awaiting shipping to me in Fresno CA. USA.
Therefore, the dreadful, "
" icon must be appended to its listings on this website, denoting the fact that some true-blue total asshaberdasher has kyped it -- probably to sell for drug money if who I suspect stole it indeed did it. 
PROS:
CONS:
MANUFACTURER: Velleman Inc.
PRODUCT TYPE: Portable oscilloscope
LAMP TYPE: None
No. OF LAMPS: N/A
BEAM TYPE: N/A
SWITCH TYPE: Multiple (16) pushbuttons on front of product
CASE MATERIAL: Plastic
BEZEL: N/A
BATTERY: 5x AA cells
CURRENT CONSUMPTION: Unknown/unable to measure
WATER-RESISTANT: No
SUBMERSIBLE: NO WAY HOZAY!!! 
ACCESSORIES: Unknown -- probably basic probe set at minimum
WARRANTY: Unknown/not stated
PRODUCT RATING:
Personal Scope *
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