Subscribe Register Login
Thursday, April 19, 2018, 2:44 p.m.

This exclusive story is reserved for our subscribers.

Support independent journalism by subscribing to the Arkansas Democrat-Gazette.

Subscribe now to continue reading.

134-year-old cylinder needs cleaning to stay in top form

A pint may be a pound the world around, but a kilogram is one kilogram only if it is the same weight as a 134-year-old cylinder of platinum-iridium alloy that sits in a vault at the International Bureau of Weights and Measures in Sevres, near Paris.

Click here to login or subscribe below.

BEST DEAL
7-Day
Home Delivery
& Online
Online Only
Get Started Get Started
Breaking News
Commenting
Newspaper Content Online
Smartphone Access
Tablet App (iPad) Access
Home Delivery
Sunday Comics, Ad Inserts, Coupons