Answer :
ANSWER
1:1000
EXPLANATION
1000 millimeters is equivalent to 1 meter. The scale factor is,
[tex]\frac{1\operatorname{mm}}{1m}\cdot\frac{1m}{1000\operatorname{mm}}=\frac{1}{1000}[/tex]As a ratio, this is 1:1000
ANSWER
1:1000
EXPLANATION
1000 millimeters is equivalent to 1 meter. The scale factor is,
[tex]\frac{1\operatorname{mm}}{1m}\cdot\frac{1m}{1000\operatorname{mm}}=\frac{1}{1000}[/tex]As a ratio, this is 1:1000