eway.ca - STPBD6350M | TRU RED BD-6350M 8-Digit Metric Conversion Handheld Calculator
Amazon.com: 40500-011 - 7.6 x 9.5 x 1.3 cm (3 x 3 3/4 x 1/2) - Metric Conversion Calculator - Each : Industrial & Scientific
Vintage English/metric Conversion Calculator USA - Etsy
Amazon.com: Calculated Industries 8025 Ultra Measure Master Professional Grade U.S. Standard to Metric Conversion Calculator Tool for Engineers, Architects, Builders, Scientists and Students | 60+ Units Built-in, Silver : Automotive