alvin 8 computing trig scale adjustable triangle clear acrylic model lx708k price per each angle color material size type

rise and slope graduations inking edges on all three sides hot stamped graduations thumbscrew locks triangle securely at desired angle 0 12 thick light blue optically clear acrylic detailed instructions included features the angle is adjustable the color is clear the material is acrylic the size is 8 the type is triangle related video specifications angle adjustablecolor clearmaterial acrylicsize 8 type triangle