; pos=fail error=7
*fix 1 reference 0 0 0 ; so there's some survey data

*sd tape metres
*sd tape 0.05 furlongs
*sd tape 0.05 furlongs per fortnight
*sd tripe 0.9 feet
*sd tape tripe 0.9 feet
*sd tape compass 0.4 meters
*sd 0.9 feet