Range finder

The rangefinder must:

·       Be compact

·     Robust

·       Housing made ​​of wood (pine)

·       No nail (screw, dowel or glue only)

·       Easy to use

·       A clear picture and easy to coincide

·       An easily adjustable optics

·       A scale that allows a rapid measurement without calculation

·       Have a measurement accuracy of at least 10% to up 10 m

·       A maximum length of 40 cm

·       Have a detailed instruction manual

·       Include in the instruction manual a graphic explaining calibration

·       Design for print media advertising

• Pine wood
• Flat mirror
• Srews, nuts, etc.