OUTFIT No. 6 MATERIAL 8 No. 1 1 No. 36 Detail of Derrick y “ - . “ ae This is a Builder’s Derrick and is used for handling heavy structural 4 “7 4 “ 39 steel or stone. The main frame is built first, then the derrick upright 4 “8 138 “ 40 or mast and last the derrick arm. The mast is a 3-hole beam…
Toys -- buildimg · Toys -- architectural
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