101 Textures in Graphite & Charcoal: Practical step-by-step drawing techniques for rendering a variety of surfaces & textures

Starboosa 23.2 mm Microscope Phone Mount with Integrated WF16x Widefield Eyepiece, One-Piece Printed Head, Aluminum Alloy Frame, Spring Clamp — Fits 0.913" Eyepiece Tubes

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