You have several options for scales.  Click on the links below the two images below. From least expensive to more expensive:

Three 660 lb X 0.2 lb digital platform scales - for aircraft up to 1,980 lbs - wired - $137.97

One 660 lb X 0.2 lb plus two 1100 lb X 0.2 lb digital platform scales - for aircraft up to 2,860 lbs - wired - $309.97

Three 1100 lb X 0.2 lb digital platform scales - for aircraft up to 3,300 lbs - wired - $395.97

Automotive scale set - for aircraft up to 3,750 lbs - wired - $900.95

Automotive scale set - for aircraft up to 5,250 lbs - wireless with case - $1,059

Aircraft scale set - for aircraft up to 4.500 lbs - wired - $1,695