From 5173a43196b756fdcc20c25860cf8dc1a7e80619 Mon Sep 17 00:00:00 2001
From: olly <olly@survex.com>
Date: Sat, 22 Jul 2017 12:14:48 +1200
Subject: [PATCH] Fix typo in y rotation on GPS page

Also link to more accurate version of the transformation on coords.htm.
---
 handbook/survey/gps.htm | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/handbook/survey/gps.htm b/handbook/survey/gps.htm
index 80f5a1cf1..bcf57d074 100755
--- a/handbook/survey/gps.htm
+++ b/handbook/survey/gps.htm
@@ -96,11 +96,15 @@ No additional scaling<br />
 Grid boundaries at 11&deg;50' and 14&deg;50'</td></tr>
 <tr><th>EFEC coordinate conversion<br />equation with respect to WGS84:</th>
 <td>Offsets &Delta;x = -575m, &Delta;y = -93m, &Delta;z = -466m<br />
-Rotations &omega;<sub>x</sub> = 5.1"; &omega;<sub>y</sub> = 5.1", &omega;<sub>z</sub> = 5.2"<br />
+Rotations &omega;<sub>x</sub> = 5.1"; &omega;<sub>y</sub> = 1.6", &omega;<sub>z</sub> = 5.2"<br />
 Scaling -2.5ppm
 </td></tr></table>
 </div>
 
+<p>Note: The table above used to incorrectly give the y rotation as 5.1".
+But there's a slightly more accurate version in the
+<a href="coord.htm#ftnBMN">Coordinate Systems section</a>.</p>
+
 <p>(Technical note: the BMN grid is actually the same as Universal Transverse
 Mercator zone 31, but setting your GPS for UTM will give rather different
 coordinates, as the plateau is actually in zone 33. My understanding of the