I operate with about a 10% ordering Level per year.  With my inventory, that's about 1.5 cases; we generally don't use more than 1/3 of the order - at least that was my experience this year. <div><br></div><div>RG<br><br>On Tuesday, May 12, 2015, Paul Schreiner via Stagecraft <<a href="javascript:_e(%7B%7D,'cvml','stagecraft@theatrical.net');" target="_blank">stagecraft@theatrical.net</a>> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">About 100 instruments?  Reasonably regular use?  I'd expect to be<br>
buying two cases of replacements a year (or about 25%).<br>
<br>
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</blockquote>
</div><br><br>-- <br>Rob Graham<br><a href="mailto:photonguide@gmail.com" target="_blank">photonguide@gmail.com</a><br><br>