Your every-day carry engineering scale ruler and pocket reference to save you time, sharpen your drawings and take precise measurements in the field, in your lab, or on your homework.
Packed with features in laser-cut stainless steel the size of your credit card:
• 26 unit conversions, 7 equations and 10 physical constants to save you time looking up references.
• Doubles as ruler, arc drawing and angle measurement tool.
• Photogrammetric ruler to calibrate length and tilt in images when used as a scale in field or lab work.
• Pipe inner diameter measurement from 0.25"-1.25" and machinist scale with 10-mil resolution.
This is a perfect gift for any engineering student or professional that will last them a lifetime.
- Can be personalized with your name, custom branded company logo, or club logo with a minimum order of 100. Message me!
Packed with features in laser-cut stainless steel the size of your credit card:
• 26 unit conversions, 7 equations and 10 physical constants to save you time looking up references.
• Doubles as ruler, arc drawing and angle measurement tool.
• Photogrammetric ruler to calibrate length and tilt in images when used as a scale in field or lab work.
• Pipe inner diameter measurement from 0.25"-1.25" and machinist scale with 10-mil resolution.
This is a perfect gift for any engineering student or professional that will last them a lifetime.
- Can be personalized with your name, custom branded company logo, or club logo with a minimum order of 100. Message me!



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