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ITEM DESCRIPTION
This an antique and large rheostat or tester probably used for antique telephones. lines. Case made in wood. All components are moving perfectly and seem to be complete, however i do not know how to test it. One big know with scale has multiple interacting disc inside and the other big know with scale has a rotating coil ball inside to adjust electromagnetic field. As you can see on pictures there is a valve, light bulb, condenser or other kind of component into a glass. There are two other knows, one of  them to make current goes to different circuits (round bridges) and the other one.  All of them rotates perfectly. Because the age, wooden case sides on left and right are a little curved. Circa 1915. Beautiful apparatus with Frankenstein and steampunk looking. Original antique condition. A really museum piece for demanding collectors. Wooden box measures: 33 centimetes X 22 centimeters X 17centimeters. Shipping costs via FedEx certified is $ 50. All defects not mentioned but visible in the pictures will be considered as described. We ship worldwide, certified with tracking code (3 to 6 weeks to arrive). If you have any question, please do not hesitate to contact me. Thank you for your visit.