to your first question, use the Analyze>set scale option.
That will calculate the number of pixels per unit, and insert
it into your picture. When you save the image, the
calibration will remain with the file.
---- Original message ----
>Date: Wed, 31 May 2006 15:09:27 +0200
>From: Klughammer GmbH <
[hidden email]>
>Subject: Calibration
>To:
[hidden email]
>
>Hi,
>
>is there a possibility to calibrate an image by drawing a
line (known
>length) and insert that length in mm, µm etc. without
calculating the
>amount of pixels before?
>How can I store different calibrations?
>
>Anneliese
Joel B. Sheffield
Professor, Department of Biology
Temple University
Philadelphia, PA 19122
[hidden email]
http://astro.temple.edu/~jbs