Cheap Geography Teaching Aids Professional
1 year ago - Multimedia - San Antonio - 32 views -$ --
Location:
San Antonio
Price:
$ --
| Product Introduction Astronomical telescope student Calculation formula: Objective focal length / eyepiece focal length * several times Barov multiple = maximum magnification Objective focal length / eyepiece focal length = magnification Installation order: Set up the tripod first. Then install the lens barrel. After the lens barrel is fixed, install the finder lens on the lens barrel (used to initially find the target object), and then install the eyepiece (choose 1 of 2 eyepieces). After finding the big target, then adjust it with different eyepieces. Note: For the first time, you must be patient and patient! The possibility of astronomical failure is very, very small, not to mention that every telescope has been strictly checked before we send it out. WARNING! Never look directly at the sun through a telescope or finder unless you have the proper solar filter. Failure to do so can result in eye damage that is permanent and irreversible. Children should be used under the supervision of an adult and should be used according to the steps. Cheap Geography Teaching Aids website:http://www.shenmateaching.com/lab-equipment/geography-teaching-aids/ |
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