Got this from a reputable govt. auction clearing house.  We have bought this kinda stuff for awhile from them and never had any trouble with it not working.    Money back assurance on this unit.  

    This is looks to be in MINT, perfect, condition.  It could be new. - no real signs of use on this.  Do not know what applications this is good for.  This model is an early model from Scientech (late 80's 90's).  Info was hard to find, but they do not make them like they used to - so get your's today!      

This came in a wood crate, nailed down.  It must be very sensitive.  We were careful taking it out, but we needed to see the backside, in order to get the model number.  Regardless, you may have to calibrate this for proper use.  

Measures 30 cm by 30 cm by 3 cm deep