LOOS. Not Loose- what are you an American voter?
Loos guages in the box come with a calibration page for each wire diameter.
Conversion of Loos numbers to pounds of Kg change with the wire thickness and type. This Wire thickness can be measured by numerous means: V-groove guage, micrometer, slide guage, calibrated eyeball. You can probably get someone to xerox this page for you.
Whew...that was rough. Loos gauges, the one's we typically purchase, are not terribly accurate devices. To calibrate one you need to actually test it with a known condition.
