An interesting item, not sure what industry it was meant to be use, but here is a wind up automatic time switch.  Not exactly sure how it works, but the smaller inner wheel turn with the leaf spring then going post to post about every 10 seconds, 30 posts in all for roughly 5 minutes a revolution.  Would have controlled something.  Has 3 leads on the bottom, has a badge that reads 110 volts 4 amps.  Marked as made by the Boston Automatic Time Switch Co and marked Patented.  Mounted to a piece of slate, the workings and housing look to be largely brass.  Has the key.  Offered as-is.  Shelf B3 – UOWe sell mostly USED and UNIQUE items. Expect minor evidence of use or imperfections from age. We guarantee accurate descriptions and use clear photos to show condition. Please email with any questions.

BUY WITH CONFIDENCE: We have sold over 25,000 antiques through multiple on line channels since 1997 with over 15,000 positive feedbacks. We have been giving quality service to the on-line collector community for over 19 years. Our selling history speaks for itself so that you can buy with confidence.

RETURNS: Accepted for any reason, full purchase price refunded upon return. We will pay return shipping at our discretion if we erred. Please inspect your item and notify us of a return within 3 days of receiving it.

SHIPPING: We usually ship on Mondays, Wednesdays, and Fridays. 99% of items are shipped within two business days.

DISCOUNTS & MULTIPLE ITEM PURCHASES; We list our items on other ecommerce platforms for exposure. However, we offer the lowest prices on our own site. We are always willing to discuss offers or multiple item discounts. Simply use the “make an offer” button on the item page or email us at [email protected] and let us know your request.