Index: xfig.3.2.5/w_rulers.c
===================================================================
--- w_rulers.c
+++ w_rulers.c	2009-03-06 11:23:08.000000000 +0200
@@ -1149,7 +1149,7 @@ get_skip_prec(void)
 		/* look for values for current zoom */
 		if ((display_zoomscale/appres.userscale <= rs->max_zoom) ||
 			(rs->max_zoom == 0.0)) {
-		    skip = rs->skipt/appres.userscale;
+		    skip = rs->skipt>appres.userscale ? rs->skipt/appres.userscale : 1;
 		    skipx = skip * rs->skipx;
 		    sprintf(precstr, "%%.%df", rs->prec);
 		    break;