of Compass Points 2
The journal of the BCRA Cave Surveying Group, December 1993
Editorial and news
Easy Suunto lighting technique
Tests on deviationscaused by various magnetic objects
A review of the new 'Twin' combined compass/clino.
Magnetic Field Variations -Vic Schmidt.
Some words from an expert on the possible errors caused by fluctuations in the earth's magnetic field.
HTO survey data interchange format -Doug Dotson/Wookey
Hierarchical Tagged Objects - A proposed survey data description language for the interchange and archiving of survey data.