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Electronic Tape Measure for Component Reels — image 1
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Electronic Tape Measure for Component Reels

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bracket for electronic tape measure to allow easy measurement of component reels

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Model information

Category
Electronics
License
Creative Commons — Attribution

This is a bracket that fits a $20 electronic tape measure from Amazon. This bracket holds 8mm wide component tape.

I highly suggest using "snug" supports at 0.2mm contact distance, and use top surface ironing for best fit.

Search amazon for "Electronic Digital Tape Measure" for various sellers. It has a STM32 inside, so you could probably modify the firmware to count components instead of centimeters. 

Full disclosure: This was a quick evening project to buy me time until I get my BeanCounter (https://www.crowdsupply.com/great-big-factory/beancounter). It works pretty well and seems to provide repeatable results within +/-0.5mm, with inaccuracy induced by the start & end of the tape depending on how it is cut and how fast the end is pulled out.