id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
61	Units option on *calibrate	Andrew	Olly Betts	"Currently the calibrate adjusts for the offset then multiplies by the scale factor, which works for a stretched tape with the end missing 
*calibrate tape 0.05 0.752

But of things like mounting a DistoX in a waterproof case the offset will be measured with another device so will not want scaling

Suggestion is to allow the addition of units to the offset if the scale factor should not be applied, this should allow the original format to continue to work while adding functionality.

if not units

{{{
real = ( reading - offset) * scale
}}}

If units eg {{{*calibrate tape -0.05m 0.752}}}

{{{
real = reading * scale - offset
}}}"	enhancement	assigned	minor		cavern			calibration