If your Double’s front LED isn’t flashing blue or green, then tap the Double’s button (lower backside, near the kickstands) three times. This will make Double discoverable.

SERIES Q03 Q* PREMIER SERIES SERIES Q-03 SERIES Q-05 SERIES Q-08. FLOW CONTROLS. QXA-005 SERIES YB SERIES. PRESSURE CONTROLS. B-06 SERIES BQ …

So, double should mean “I don’t have hearts” as opposed to “I do have hearts.” It is shortsighted to write “Negative Doubles through 3S” (or any other arbitrary level) on your convention card.

In this series, we’ll start with the two most basic non-penalty doubles: the Takeout Double and the Negative Double. Down the road, we’ll explore the many other doubles which have permeated …

OSHA Training Toolbox Talk: Basic Electrical Safety – Things to Know About Double Insulated Tools [Reference 1910 Subpart S / 1926 Subpart K]

Double shows exactly three-card support and any strength. Notice that it doesn’t matter what the first Opponent does (he can pass or double or bid), but it is the second opponent who has to …

n’t penalty. It’s a great comfort to know that you can always make a DSI (give it any name you wish) double at a low level, without fear of partner’s misi