of Compass Points 2

The journal of the BCRA Cave Surveying Group, December 1993


Editorial and news


Instrument Corner

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.