ANGLE SETTER

摘要

Some two years ago I saw a device being used to set up a saw and it struck me that it was a simple but very useful device. I then went through ail the tool suppliers catalogues, looking for something similar but to no avail. Recently however I did find one in a catalogue of the company "Greenweld". However on purchasing one I found that it was made of plastic and was quite small in size. I felt therefore that it will not last any length of time. To give a brief description, the device is an adjustable square but with a built in protractor. It is however, built in such a way, to allow measurements to be taken or set very close to the base. I would though note that article in question is patented in the U.S.A and the U.K. As has been discussed in these pages before, I have always been given to understand that the patents essentially preclude the production and sale of the items covered, although I am sure that it is more complex than this. My understanding is, that as individual engineers, we are able to reproduce a patented item but for ourselves only and not for other people and certainly not for sale. This apparently comes about as it is allowable to make a patented article in order to perhaps study and improve it.