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Scale Ruler Scale Ruler v1.85


Ruler app designed for objects and maps measurement with various scales selectable. Both units system available: metric (meters) and imperial (Inches, feet and statue miles).

It's possible to measure scaled models to check the corresponding dimensions against the original.
Precise distance measurement by dragging green marker and angles measurement by protractor.


Added possibility to define own scales.

Now (version >=1.4) it's also possible to measure distance on map in scale.

NEW in 1.6:
Added protractor for angles measurement.

Ruler app contains mainly scales for model trains:
*0 (both 1:45 - US and 1:48 - Europe)
*00 - British scale 1:76.2
*H0 - 1:87
*TT - 1:120
*N - 1:160
*Z - 1:220

There are also ruler scales used in other scale models (planes, ships kits etc.):

Map scales:
1:50 000
1:100 000
1:500 000 (ICAO - aviation)


Parental rating: 
Everyone (age 6 and over)
Default language: 
Supported languages: 
Afrikaans, Amharic, Arabic, Bulgarian, Catalan, Czech, Danish, German, Greek, Spanish, Persian, Finnish, French, Hindi, Croatian, Hungarian, Indonesian (legacy in code), Italian, Hebrew (legacy iw locale), Japanese, Korean, Lithuanian, Latvian, Norwegian Bokmål, Dutch, Polish, Portuguese, Romanian, Russian, Slovak, Slovenian, Serbian, Swedish, Swahili, Thai, Tagalog, Turkish, Ukrainian, Vietnamese, Zulu
Trial version: 
"In-App" billing: 
With advertisements: 
Scale Ruler
Scale Ruler
Scale Ruler
Scale Ruler


Requires Google Play and/or account: 
Requires third-party libraries: 
Requires 'rooted' device: 
Target Android version: 
Android 5.0
Minimum Android version: 
Android 2.2
Requires permissions: 
Access network state, Internet

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