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adjustable focus gemological spectroscope
Selling leads
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...be adjusted freely within the range of 0-45°; 3. The hand-held hole is designed in the middle of the lens arm, which makes the lens adjustment ...
2024-12-09 11:36:02
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... adjusted in 45 degree range. Large hand wheel focusing, ball bearing type guide rail, go up and down stably and naturally. Ingenious appearance, ...
2026-04-29 00:03:01
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... Spar and Clear Window and Viewer FID-1 Specifications: Material Natural Calcite Color Black Weight 20g Portable Yes Focus Not Adjustable Warranty ...
2026-04-29 00:03:01
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