Alas, it seems my supply of cheap Chinese stuff to review has dried-up completely. If fact, all the cheap Chinese stuff has dried-up - just look at eBay. Oh well, I don't need another "Phas" pedal anyway. A number of the products have disappeared from Amazon as well, but the pedals are still in stock, and they're even cheaper now.
General International 1.2 Amp 16 in. Variable Speed Scroll Saw with Flex Shaft LED Work Light
This is another piece that I got for free for review. Normally it is about $90. I would have soldiered on forever with my ancient Craftsman saw because I am cheap, but free is free and even better than cheap, and this is a nice upgrade. Compared to my antique model, this saw is variable speed, easier to change blades and takes both kinds, adds a work light, dust blower and dust port, and is lighter with a bigger table.
First, I am bound to state that I received this pedal at no cost for review. Having gotten that out of the way …
What is a tremolo? As relates to electric guitar, tremolo is a modulation in the volume of the sound. That's all. Back in the way early days, this was an effect that could be implemented very inexpensively using the often-unused half of a pre-amp tube in an amp. This made it a popular feature for amp manufacturers, which in turn led to its use by musicians, especially back when there were basically no other effects.
Here's a freebie nut spacing rule I made some time ago. Just print it out on a piece of paper, and fold it over on the centerline. Don't worry about the printer scaling, it doesn't matter. To use the rule for a guitar, mark the two E strings on the nut and slide the rule until the marks line up with 4 between them. Et cetera.