Comparison scale -- for weigthed math number blocks
thingiverse
Scale/Balance for comparing weighted number blocks; useful in teaching math comparison and pre-algebra. Scale has suction cup feet (20mm diameter), but the "legs" can be bolted to a more substantial base (of your choosing). Assembled with M3x5 (top/arm) and M3x8 (btm/legs) -- the holes are essentially self-tapping. Compatible weighted number blocks -- Slide version: https://www.thingiverse.com/thing:2517546 Compatible weighted number blocks -- Magnetic version: (coming soon) Cheapo suction cups, 20mm diameter: http://www.ebay.com/itm/50PCS-Clear-Transparent-Hanger-Kitchen-Bathroom-Suction-Cup-Sucker-20mm/311566424293?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m2749.l2649
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