Dichroscope and "Chelsea Filter", folding More sophisticated diamond gauges shorter working distances)

shorter working distances)

Has two detachable lids

I like it not having an extra inset lens

OVERALL SIZE

The Apex tests for the following:

Dichroscope and "Chelsea Filter", folding More sophisticated diamond gauges shorter working distances)Summary Two testers in one. The dichroscope is the same as ref. dichroscope, folding. Instructions are not included with this item. The Chelsea Filer is the same as ref. chfilt (except that our ref. chfilt is the original English filter, as designed at the Chelsea College of Science and Technology in 1934; this version was designed in China more recently). Instructions not included with this item. Is it easy to use? Yes. Limitations & Disclaimer All