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Reviews (16)

Oct 28, 2015
Great Dew Buster
3 of 3 found this helpful I bought this to kill dew problem on my telescope. On most nights moisture condensation begins soon after it gets dark and I use this hot air blower/dryer to kill it. I power it from a large 12 Volt battery, 45 AH capacity that I carry along. I use this dryer frequently to blow air on surfaces that appear to show moisture condensation. This device helps me to continue observing the night sky almost into vee hours. It is a good useful device and amateur astronomers friend.
I have been using it for only a few months and I am not sure how long it will last. Construction appears to be poor by its looks but so far it has been working. The air that comes out is not extremely hot which is good for my application. Air if too hot could damage my equipment and so, I like this device. Of course, each use is for couple of minutes at a time and several times each night. I am happy and if this one fails I will order another one.

Mar 02, 2018
Good quality pulley
I bought two of these pulleys for use on my German Equatorial telescope mount. It's finish accuracy, runout, eccentricity were critical to minimize errors in tracking. I am happy that this pulley set has met with my expectations. The equatorial mount is performing well after this installation. I am satisfied by its quality and performance.

May 20, 2017
Good product for its price
I bought these thrust bearings for an extremely low speed application. The speed at which they run is around 30 to 60 rpm. They work for me. I am happy.
I can not comment for higher speeds