[Bugs] #4376 Ruler UNSP: Ruler 25 custom units

[Sugar Labs Bugs]

#4376: Ruler 25 custom units
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    Reporter:  tonyforster                |          Owner:  walter                     
        Type:  defect                     |         Status:  new                        
    Priority:  Unspecified by Maintainer  |      Milestone:  Unspecified by Release Team
   Component:  Ruler                      |        Version:  Unspecified                
    Severity:  Unspecified                |       Keywords:                             
Distribution:  Unspecified                |   Status_field:  Unconfirmed                
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Comment(by walter):

 There is a proposal to build a protractor tool as a separate activity as
 well that will use the camera to let you measure angles in the physical
 world.

 What might be an interesting direction to go would to be to add callipers
 to the Ruler activity,
 to measure objects placed directly on the screen.

 (And if combined with the Distance activity, a ruler activity could
 measure objects in 3-space using the camera.) But let's open separate
 tickets for these?

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Ticket URL: <http://bugs.sugarlabs.org/ticket/4376#comment:4>
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