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Steel 6 Inch (150mm) Ruler - Otto Frei
Otto Frei

Steel 6 Inch (150mm) Ruler

Part # 135.510 88 In Stock Weight -- lb / -- g
$3.25
Volume pricing
Total qty Discount Per unit You save
1 – 2 — $3.25 —
3 – 4 5% off $3.09 $0.16
5 – 9 10% off $2.92 $0.33
10 + 12% off $2.86 $0.39
Add 2 more for 5% off, saves another $0.16 each.

A reliable bench reference for everyday measurement tasks, this stainless steel ruler is an essential tool for jewelers, metalsmiths, and watchmakers. One side features dual-scale graduations running to 6 inches and 150mm, making it easy to switch between imperial and metric readings without changing tools. Flip it over and you have a compact reference chart imprinted directly on the steel—covering inch-to-metric conversions, fraction-to-decimal equivalents, Tap Drill data, and W.W. UNF threading information. At 0.80mm thick, it lies flat on the bench without flexing under light pressure.

Features

  • Dual-scale graduations: inches (to 6") and metric (to 150mm) on one side
  • Reverse side imprinted with inch-to-metric conversion table
  • Fraction-to-decimal equivalent reference chart on reverse
  • Tap Drill information imprinted on reverse side
  • W.W. UNF threading reference imprinted on reverse side
  • Constructed from stainless steel at 0.80mm thickness
  • Flat profile stays stable on the bench surface

Specifications

Material Stainless steel
Thickness 0.80mm
Length 6 inches / 150mm
Scale – Side A Inches (to 6") and millimeters (to 150mm)
Scale – Side B Inch-to-metric conversions, fraction-to-decimal equivalents, Tap Drill data, W.W. UNF data
Country of Origin India
Variant Count 1
California Prop 65 Warning California Prop 65 Warning:
Cancer and Reproductive Harm. www.P65warnings.ca.gov.
Brand
Otto Frei
Part #
135.510
Type
Measuring Tools
Dimensions
6 in x 1 in x 0.1 in
Material
Stainless steel
Thickness
0.80mm
Length
6 inches / 150mm
Scale – Side A
Inches (to 6") and millimeters (to 150mm)
Scale – Side B
Inch-to-metric conversions, fraction-to-decimal equivalents, Tap Drill data, W.W. UNF data
Variant Count
1