Deluxe TB Testing Arm Set (3) Made of soft, palpable material, the three models in this set facilitate learning how to interpret TB test reactions. Students can practice evaluating reactions by feeling for and measuring skin indurations. The brown model and one beige model include lifelike variations in skin discoloration that can occur ar...
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Fantastic Teaching Aid
The only thing I think would make this better is if it came with a few clear bendable mm rulers