"Oz1" Cappy_killfiled_me_in_asa_What_a_wimp wrote in message
...
Jon, passage makers usually open the compass to check a heading then
slide the cover back on to protect a valuable tool. To leave it
exposed moore than necessary is foolish.

Oz, we are talking about Bobsprit here. Passagemaking doesn't feature in
this discussion.
Regards
Donal
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