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Warning: mysql_fetch_array() expects parameter 1 to be resource, boolean given in /home/admin/domains/scienceflicks.com/public_html/bcms/bcmscore.lib.php on line 1616 Pocket Hardness Tester PROTOTYPE | IT WERKS! in General Technology Videos | Science Flicks
Tossing around ideas for the next workshop gadget. An electronic hardness tester that fits in your pocket. 👉C**T HAIR RULER https://www.etsy.com/ca/shop/AvEwerkz