A Correlated History of the Universe (WMPTP000) is a full-color educational foldout chart. On one side is "A Correlated History of the Earth" and the other side has "A Correlated History of Matter". This is not only a great study guide for the student but it can also provide hours of interesting entertainment for anyone interested in the steps and stages of the universe! A reference for: Astronomy, Geology, Paleontology, Physics & Chemistry. v III, 2009
Save $5.00! We still have a few copies of "A Correlated History of Matter", v II, 2002. While it doesn't have the latest updates and additions its content is close to the same and it is still a useful reference guide, fun to peruse, and makes a nice gift.
Here is a spectacular and informative guide to the amazing world beneath our feet. Stunning color photographs of rocks, fossils, minerals, precious metals, crystals, jewels and gemstones give the reader a unique eyewitness insight into the evolution and composition of the Earth. See rocks that have come from outer space, stalactites as old as dinosaurs, the strange and beautiful shapes of natural crystals and priceless nuggets of gold, silver and platinum. Learn what the Earth is made of - and how its rocks were formed, how early humans made the first flint tools and how diamonds and precious stones are cut, polished, and made into jewelry. Discover how prehistoric animals are preserved today as fossils, how volcanoes work, how rocks are formed from molten lava, how minerals and metals are mined and how pebbles on the seashore are worn down into sand, and much, much more!
Heavy duty 3/4'' plain black nylon loupe lanyard with a quick release buckle and a split ring. This lanyard may be used for any purpose but we've had it custom manufactured specifically for use with the BelOMO loupe.
Important: We offer this lanyard for no additional charge when you buy the combo package of the BelOMO loupe with attached lanyard. Attaching the lanyard requires a screw to be removed so let us do it. We've been doing it for years and you save money!
Use the split ring on loupes with a mounting hook. To use the lanyard with a BelOMO loupe remove one screw on the support shaft of your BelOMO loupe, swivel the frame out of the way and slide the end over the support shaft then install the screw again. Don't use the split ring to attach the lanyard to the loupe. (We suggest that you purchase the loupe with the lanyard already installed.)
The Deluxe Moh's Hardness Pick Set now comes in two case types. The wooden case is small enough to carry and the top screws into the base to make a perfect desk stand. The plastic case is longer but the thinner size makes it easier to carry in your field tool set.Hardness is an important and quantifiable physical characteristic of a mineral and in your effort to identify an unknown mineral, the hardness, if known, combined with other properties, can narrow your search to just a handful of possibilities. Simply scratch a smooth surface of your unknown mineral with the picks of various indicated hardness. As an example, if a No. 5 pick scratches the mineral, but a No. 4 pick does not, then your mineral hardness is 4.5. Then compare this against a table of minerals listing hardness values to aid in identifying the unknown mineral.
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