<div dir="ltr"><div>The calibration was inexact on resistance dimmers. With saltwater dimmers, you could measure the specific gravity of the fluid and adjust the salt concentration, just as you'd use a hydrometer to test the fluid in a lead-acid battery.</div><div>/s/ Richard</div><div>_________ </div></div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Jun 1, 2015 at 8:00 AM, Wild, Larry via Stagecraft <span dir="ltr"><<a href="mailto:stagecraft@theatrical.net" target="_blank">stagecraft@theatrical.net</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<p class="MsoNormal">Bill Conners wrote: “Some lighting designers never got past out-3-5-7-full of piano boards and did fine in the computer console era.”<u></u><u></u></p>
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<p class="MsoNormal">To make a slight correction to Bill’s phrase: It should actually read “Out-7-5-3-Full.” Piano Boards were calibrated in levels of resistance, not levels of light. It’s one of the things you need to remember when trying to recreate designs
from the earlier era. <u></u><u></u></p>
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<p class="MsoNormal">Larry Wild,<u></u><u></u></p>
<p class="MsoNormal">An old academic from South Dakota<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Bill Conner via Stagecraft <<a href="mailto:stagecraft@theatrical.net" target="_blank">stagecraft@theatrical.net</a>><u></u><u></u></p>
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