STAEDTLER Mars Triangular Scale

Mechanical Engineering. Architectural / 1:20,1:25,1:50,1:75,1:100, 1:125 ( 987 18-1 ) Architectural / 3/32,3/16,1/8,1/4,3/8,,1/2,3/4,1,1 1/2,3,16 ( 987 18-31 ) Engineering / 10,20,30,40,50,60 ( 987 18-34 ) Mechanical / 1/8,1/4,3/8,1/2,1, 16, 50. ( 987 18-37 ) DC Architectural / 1:100,1:200,1:250,1:300,1:400,1:500 ( 987 19-4 ) Architectural / 3/32,3/16,1/8,1/4,3/8,1/2,3/4,1,1 1/2,3,16 ( 987 19-31 ) Engineer / 10,20,30,40,50,60 ( 987 19-34 ) Architectural / 1:100, 1;200,,1;250,1;300,1;400, 1:500 ( 987 18-4 ) ALVIN Engineer / 10. 20.30. 40. 60. 50 ( 111P )