Why can't I insert a decimal into an sql server table?

I have a simple query:

INSERT INTO tblIndicators (RunID, EventTS, MA1t3) 
Values (65, '11/2/2012 2:25:00 AM', 1.0);

I get this error message:

Msg 8115, Level 16, State 8, Line 1
Arithmetic overflow error converting numeric to data type numeric.

The precision on the Decimal datatype is (8,8). So whats the problem??

How do I allow decimals in SQL?

In standard SQL, the syntax DECIMAL( M ) is equivalent to DECIMAL( M ,0) . Similarly, the syntax DECIMAL is equivalent to DECIMAL( M ,0) , where the implementation is permitted to decide the value of M . MySQL supports both of these variant forms of DECIMAL syntax. The default value of M is 10.

Is decimal a valid datatype in SQL?

DECIMAL [(p[,s])] or DEC [(p[,s])]The DECIMAL data type accepts numeric values, for which you may define a precision and a scale in the data type declaration. The precision is a positive integer that indicates the number of digits that the number will contain.

decimal (8, 8) means all 8 of your significant digits are to the right of the decimal point. 1.0 is too big.