Hollow Triangular Drafting Scales

Picture of Hollow Triangular Drafting Scales

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Alumicolor® triangular Drafting Scales are made of extruded aluminum. The Alumicolor® photo anodizing process makes the calibrations a part of the aluminum, providing a smooth, tick-free finish and markings that are resistant to cleaners and solvents.

Hollow Scales are lightweight for easy portability and a more affordable price. The standard Architect and Engineering versions are available in 6", 12" and 18" lengths.

6" Hollow Scale

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Hollow Scale End-View

End view of hollow triangular drafting scale

 

Hollow Drafting Scales

Code Version Calibrations Price Colors
3020 6" Architect 16, (1/8, ¼), (½, 1), (3/8, 3/4), (3, 1½), (3/32, 3/16) $7.95 Silver, Gold, Purple, Red, Blue, Green, Black
3030 12" Architect 16, (1/8, ¼), (½, 1), (3/8, 3/4), (3, 1½), (3/32, 3/16) $10.50 Silver, Gold, Purple, Red, Blue, Green, Pink, Black
3035 12" L2R™ Architect 1/32, 1/16, 1/8, ¼, ½, 16 $10.50 Silver
3040 18" Architect 16, (1/8, ¼), (½, 1), (3/8, 3/4), (3, 1½), (3/32, 3/16) $18.95 Silver
3220 6" Engineer 10, 20, 30, 40, 50, 60 parts per inch $7.95 Silver, Gold, Purple, Red, Blue, Green, Black
3230 12" Engineer 10, 20, 30, 40, 50, 60 parts per inch $10.50 Silver, Gold, Purple, Red, Blue, Green, Pink, Black
3240 18" Engineer 10, 20, 30, 40, 50, 60 parts per inch $18.95 Silver
3430 30cm Metric Architect 1:100, 1:200, 1:250, 1:300, 1:400, 1:500 $10.50 Silver
3432 30cm Metric Engineer 1:1, 1:2, 1:5, 1:10, 1:20, 1:50 $10.50 Silver
3434 30cm Metric Mechanical 1:20, 1:25, 1:50, 1:75, 1:100, 1:125 $10.50 Silver
3630 12" Combination A - 16 & (1/8, ¼)
E - 10 & 50
M - 1:100 & 1:500
$10.50 Silver, Gold
  • Dimensions: 1.022" wide per side.
  • Packaging: Triangular plastic tube with hang cap.

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