PT24	Scale	Height	Spread
1000	1:1000	50	6
750	1:750	50	9
500	1:500	50	12
400	1:400	50	14
300	1:300	55	19
200	1:200	80	28
150	1:150	110	38
100	1:100	160	55
075	1:75	210	75