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SE 7-in-1 Survival Whistle What makes a good review?
on October 2, 2012
Swings back and forth a long time before settles on what it thinks is north, which turns out to be about 10 or 20 degrees off from magnetic north per my Silva Model 26, so best to use the compass as a general reference only.
Very bright. Have to hold the on button in to keep it lit, but that's okay, the battery will last longer that way. To change batteries have to remove and replace a very small cross-headed screw, so if plan to use enough to have extra batteries along should bring along a small phillips screwdriver too. Also some tape in case the tiny screw is lost in the tall grass or whatever.
Makes more of a loud recorder sound, not really very shrill-sounding. Interestingly, will play 3 different tones: G (open string on guitar) when blow a bit harder then when normally breathing out; Bb (3rd fret on G string) when blow harder like blowing out a candle; C (6th fret) when blow as hard as possible.
Storage compartment: 2
Pretty small as other reviewers have noted.
Has a small bubble but not too much of a problem as I just move it out of the way. Is in Celsius and Farenheit. Celsius scale is marked in 2.5 degrees increments and numbered every 10 degrees. There are no separate markings for Farenheit - it is merely numbered at the equivalent Celsius marks e.g. 23 F is numbered at the -5 deg. C. mark, 77 F at the 25 C mark, etc.
About .75" diameter. Might be able to concentrate sun's rays enough to be a fire starter. Not sure. Will have to test.
Also about .75" diameter. Set very far back of a high collar so may not be too good as a signal mirror.
Overall average: 2.7, so 3 stars.