by admin on June 30, 2009
Back in March, we explained how Jonard’s Magnepull works and can be used to make wiring the home much easier. If you thought the Magnepull was useful, you’d probably like Jonard’s Magnamole magnetic cable guide. While the Magnepull helps to run cable from floor to floor (attic too!), the Magnamole’s forte is running cable through cavity walls and other void spaces.
The Jonard MM-800 cable guide system comes with one magnetic rod, two magnetic extensions and 5 magnetic caps in various sizes and colors.
Here’s how the Magnamole works:
- Thread the Magnamole magnetic rod through the hole in wall
- Push the magnetic cap on the end of the cable
- Touch the magnetic cap to the magnet on the end of the rod
- Pull the cable through the wall using the magnetic rod.
Overall, the Jonard MM-800 is an inexpensive way to fish cable with just one person.
Jonard Industries has created a great video with several real life examples of how the Magnamole can be used to simplify and speed up the wire fishing process.
It’s fairly well known that magnification is the process of making an object appear larger. The purpose is usually to see detail that is impossible or difficult to see with the naked eye.
The total magnification depends on a couple different pieces of the microscope including the eye pieces, zoom body and any lens including auxiliary and objective lens.
It’s important to remember that any magnification over 1.0X will make the image larger, while any magnification under 1.0X will make the image smaller. So if a microscope has a 1.5x auxiliary lens then the magnification will increase by half i.e. something that is 10cm long will appear 15cm long.
Do the following to get total magnification:
- Take the initial objective lens and multiply it by the auxiliary lens to get the total lens magnification
- Take the lens magnification and multiply it by the eyepiece magnification
- Take this number and multiply by the magnification of the body (which on a zoom microscope is a range).
For example, the Luxo 23711 binocular stereo-zoom microscope has a .7X-4.5X zoom body, 10X eyepieces, no auxiliary lens and no objective lens. The magnification for the microscope as it comes from the plant is 7X-45X. You get this number by multiplying all the magnification components together. If you added the 1.5X auxiliary lens, you would have a magnification range of 10.5X-67.5X (7X-45X * 1.5X = 10.5X-67.5X).
Wondering about diopters too?
