I have two scopes for sale first one is nice and bright, calibrated except I cannot get the lowd well meter to cal asking 325 and the ride Second everything works screen is abit dim in the sun asking 325 and the ride. Both have the 12 volt inverters so it is a stand alone on the car or plug in 110 v.
I still have one that I built, has only been used a few times. Maybe I can dig it out and see if I have the assembly manual.
