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Educational contact goniometer with fixed limbs



Ward's Natural Science
Contact goniometer (plastic 10.8 x 6.4 cm) with an instruction leaflet (12.7 x 15.2 cm) in beige paper envelope (16.6 x 9 cm) .
Signed "WARD'S | CONTACT GONIOMETER | WARD'S NATURAL SCIENCE | (800) 962-2660 | Made in U.S.A."
2nd half 20th century

Collection: private collection

Educational contact goniometer with fixed limbs

Educational contact goniometer with fixed limbs

Educational contact goniometer with fixed limbs