US$ 16.00
and a removable cord post
Enlarged mandible model exposes lower jaw teeth
Triple-range moving-coil DC voltmeter at 0-3V
plastic body with sturdy metal rod
Premium gyroscope and gimbal cradle on a wooden base
Rollers for Inclined Plane, 7cm Manufacturer_Eisco and a removable cord postSolid metal 400g roller at 7cm wide by 5cm diameter on cone bearings in a cord ready metal frame, the lighter companion to the PH0341A roller for inclined plane investigations.
US$ 16.00
US$ 48.00
US$ 14.00