SOME ADVICE ON CHOOSING AND BUYING USED MICROSCOPES by James McHone of Stones2Gems .Polarizing and brightfield microscopes have been important tools in my geological research and teaching for the past 40...
Buying an Oscilloscope on ebay 1. It's important to keep in mind that a scope is a highly complex piece of electronic test equipment, and not only has to be functional , but correctly calibrated to actually be...
Choosing the right projector may seem like an impossible task since there are dozens of manufacturers and hundreds of projectors to choose from. Don't think of it that way. Just glance through our simple,...
Button Quail are the smallest quail in the world, they are about the size of a bumble bee when hatched. They originated in China and now come in an array of colors and patterns. You cannot tell what color a...
SOME ADVICE ON CARING FOR MICROSCOPES by James McHone of Stones2Gems . Here are a few bits of advice that during my teaching years, I provided to my students in geology courses (petrology, petrography,...
This is a basic primer on buying used or new tubes from sellers that know nothing about the tubes they are offering. Also offers simple tests that any person can conduct to determine the quality of a vacuum...
Shipping collectibles 101 Double Boxing is Your Friend As sellers the last thing we want to have happen is for one of our fragile collectible items to arrive at the buyers house broken. And believe me it is...
POPCORN MACHINE BUYERS GUIDE If you are in the market for a popcorn machine, there are a few things you need to consider. Over the last few years more and more people have built home theaters and they are...
A full spectrum Neodymium bulb is an ordinary incandescent light bulb, except that the glass shell is infused with the rare earth mineral element Neodymium, which is baked into it. It gives the glass a...
What are Overhead Projectors? Simply stated, an overhead projector displays images to an audience. Overhead projectors typically consist of a large box containing a very bright light-source, a fan for cooling...