Westcott
Westcott B-65 12-Inch/30cm Beveled Ruler - Clear
★★★★★
Westcott's beveled clear ruler delivers 16th-inch precision with a laminated build that survives years of drafting table use.
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Overview
Key Features
Calibrated in 16ths to the inch
Laminated for durability.
Translucent color allowing for viewing through to the page.
Specifications
Length
12 inches / 30cm
Calibration
16ths of an inch
Edges
Beveled
Material
Translucent plastic, laminated
Color
Clear
Pros & Cons
👍 Pros
- 16th-inch calibration provides the standard graduation increment needed for general drafting, layout, and technical drawing
- Laminated construction protects graduation markings from the erasure and abrasion that degrades unlaminated plastic rulers over time
- Translucent material allows alignment over existing marks without lifting the ruler — a practical advantage for overlay drafting work
- Beveled edges keep the ruler body slightly elevated for cleaner ink lines with technical pens
- At 12 inches/30cm, the length is versatile enough for most standard sheet sizes without being unwieldy on a compact work surface
👎 Cons
- 16th-inch is the finest graduation — users who need 32nd-inch or finer precision for engineering or machinist work will need a different scale
- Plastic construction means this is not suitable as a cutting guide — the edge will notch under craft knife pressure
- Translucent material can become harder to read in low contrast lighting conditions where the scale blends into the underlying page
- Single length (12") may be limiting for larger format drafting work where an 18" or 24" ruler would be more efficient
- No centering zero scale — calibration starts from one end, so finding midpoints requires manual calculation
Frequently Asked Questions
What does "calibrated in 16ths to the inch" mean for practical accuracy?
Each inch is divided into 16 equal segments, giving you markings at every 1/16" (approximately 1.6mm). That's the standard graduation for general drafting and layout work — fine enough for most technical drawing tasks without requiring an engineer's scale. If you need 32nds or 64ths, this ruler isn't built for that level of precision.
Does the laminated surface hold up to pencil and eraser use over time?
The laminated finish protects the printed markings from wear, which is the primary failure point on unlaminated plastic rulers where graduation lines scratch off or fade. Repeated erasing directly over the scale is possible without degrading legibility — a real advantage over bare acrylic alternatives that show wear quickly.
How transparent is "translucent" — can you actually read lines through it?
The clear material provides enough transparency to see underlying gridlines, light pencil marks, and layout guides through the ruler body. It won't be optically clear like glass, but you can align it over existing marks without lifting the ruler to check positioning. This is its primary functional advantage over opaque rulers for drafting and design work.
Is the beveled edge on both sides, and which edge do I use for inking?
The beveled edges are designed to lift the ruler body slightly off the page surface, which helps prevent ink from bleeding under the ruler edge when using technical pens or fine liners. Use the beveled side face-down against the page for the cleanest inked lines and to minimize smearing.
Is this ruler suitable for cutting with a craft knife or box cutter?
No. Plastic rulers — even laminated ones — are not rated as cutting guides. Craft knife pressure will notch the edge over time and compromise its straight-edge accuracy. For cutting, a stainless steel ruler is the appropriate tool.
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