NavList:

Alexandre,

Yes, but for the collimation check I also want to be able to rest it on
the sextant frame and be assured that the laser beam is parallel to the
edge on which it is resting. I have one of these laser pointers in the
shape of a ball pen. It rolls around, it is not completely flat along
the longitudinal axis, and, worst of all, the light switch is a
momentary button. Frank's device is not too big to be placed on the
sextant frame, has straight edges, and an on/off switch.

Herbert

Alexandre E Eremenko wrote:

>I would use a laser pointer, normally found in the
>office supplies stores, rather than hardware stores.
>It looks like a pencil, and I think that it is good
>for this experiment.
> 
>


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