Editor’s note: Please do not put answers on our Facebook page; we want everyone to have fun guessing.

In our feature “What’s This?” we share a photo of an old or odd agriculture-related piece — or from an old farm home. Maybe we know what it is and maybe we don’t.

Either way we want our readers to tell us what it is. Email answers to agriview@madison.com with a best guess — one guess per email. Please include name, address and phone. We’ll draw a name at random — from those submitted with correct answers — to award a prize.

And we want our readers to submit photos of mysterious things found in the shop or old corn crib or attic — or basement.

Email photos to agriview@madison.com as jpg attachments, at least .3M or 300k in size, with “What’s This” in the subject line of the email. Please include name, address, phone and where the item was found. We’ll draw a name at random from those submitting photos to award a prize.

Email agriview@madison.com with questions.

Our previous “unknown” piece of equipment, published online and in the Feb. 28 issue of Agri-View, are Delco batteries, necessary for electricity before REA brought power throughout the country. Mr. Shavlik, photo contributor, said he thinks the batteries used a water and soda combination. Jason Maloney was chosen randomly from correct answers to win our prize for playing.

Maloney of Washburn, Wisconsin, said, "The item Mr. Shavlik came across is a battery. The caps allow electrolyte to be added to each cell."

Dick Ewald of Manitowoc, Wisconsin, said, "The picture of the three items seem to be an early construction of a battery pack of individual cells, which when connected could generate a level of voltage to start early tractors or cars equipped with a starter. These appear to be early storage batteries of either iron, nickel and alkaline, or lead and acid, from the late 1800s or early 1900s."

Neal Koepke of Edgar, Wisconsin, said, "Objects pictured are electrical cells; when connected in series they form a battery that was charged by a wind generator in the good old days."