# LOONENG Ruling Pen for Masking Fluid, Cross Hinged Fine Line Drawing Tool 0.1mm | Precision Artist Pen **Brand:** LOONENG **SKU:** urr5248 **ASIN:** B0CCPJQHYZ **Canonical URL:** https://crowcrowcrow.com/p/looneng-ruling-pen-masking-fluid-cross-hinged-fine-line-drawing-technical-suitable-use-ink/urr5248 **Category:** home-kitchen **Subcategory:** Categories **Availability:** in_stock **Price (INR, all-inclusive):** ₹1,242 **Discount:** 47% **Customer rating:** 4.30/5 from 32 ratings ## Description LOONENG Ruling Pen for Masking Fluid offers precise fine line drawing with adjustable width. Made from durable stainless steel, it's perfect for ink, paint, and masking fluid. Imported from USA, all duties included. Arrives 13-16 days. ## Highlights - Precision Line Adjustment — Adjust line width from 0.1mm using the side screw for exact control in technical drawings, calligraphy, or masking fluid application. Ensures consistent thickness for detailed artwork. - Durable Stainless Steel Build — Crafted from rust-resistant stainless steel for strength and flexibility. Withstands heavy use and is easy to clean, providing reliable accuracy for all your artistic projects. - Versatile Fluid Application — Ideal for ink, gouache, watercolors, and especially masking fluid. Achieve clean lines and precise masking for vibrant watercolor paintings or detailed illustrations. - Fine Line Drawing Specialist — Designed for cartography, technical drawings, and intricate art. Creates exceptionally fine lines, allowing for detailed work that is difficult to achieve with standard pens. ## Key features - ART RULING PEN DRAWING PAINTING TOOL: Ruling pens are traditionally designed instruments that lay down lines in ink, paint, or any fluid medium with the viscosity to flow. Excellent for creating precise lines and drawing with ink, drawing and masking fluids, or even thin paints. - SELECT THE WIDTH WITH THE SCREW ADJUSTER: The two parts of the tip hold ink or with other drawing fluids between them by capillary action. By adjusting the screw on the side, you can carefully and very accurately adjust the width of the line you're creating. It is used to draw lines of precise thickness with paint or ink. - INSTRUCTIONS FOR USE OF RULING PEN: Adjust to your chosen line width, dip the ruling pen in ink or masking fluid and draw onto the paper. It is possible to create very fine lines. If you use masking fluid, let it dry and paint your picture. Once your painting is dry, remove the masking fluid to reveal the unpainted areas. - USED TO CREATE ACCURATE FINE LINES: Ruling pen is designed for fine line drawing, cartography, calligraphy, and technical drawings. It can also make fine lines and borders in Indian ink, gouache, drawing ink, watercolors, and masking fluids. In addition, it is used to draw lines of precise thickness with paint or ink. - DURABLE STAINLESS STEEL CONSTRUCTION: The ruling pens are crafted in stainless steel with elastic properties, excellent strength, and durability. They do not rust, are easy to clean and provide lightness, flexibility, and accuracy in strokes. In addition, thick plastic handles and durable stainless steel nibs can withstand heavy use. ## Why choose this product **Authentic Precision Tool for Indian Artists** — The LOONENG Ruling Pen brings professional-grade precision to your Indian art studio. Sourced from authorized US retailers, this tool is built for accuracy, allowing artists to create exceptionally fine lines with ink, paint, or masking fluid. Its durable stainless steel construction ensures longevity, resisting rust and wear from frequent use. Whether you're a student, hobbyist, or professional, this pen offers the control needed for detailed technical drawings, cartography, or intricate watercolor masking. Imported directly, it bypasses the uncertainty of local market availability for specialized art tools, ensuring you get a genuine, high-performance instrument. **Who Should Use This Pen & Who Should Consider Alternatives** — This ruling pen is ideal for artists, illustrators, architects, and hobbyists who require precise, adjustable fine lines for technical drawing, cartography, calligraphy, or detailed watercolor masking. If you frequently work with masking fluid and need clean, sharp edges, this tool is a perfect fit. However, if you are a beginner looking for a simple pen for general sketching or casual doodling, a standard fine-liner or brush pen might be more suitable and easier to manage. Those who prefer a pen with a pre-filled ink reservoir might also find the dip-and-draw method less convenient. ## How to use 1. Turn the screw on the side of the ruling pen to carefully adjust the gap between the nibs. Start with a smaller gap for finer lines (e.g., 0.1mm) and widen for thicker lines as needed for your drawing. — Adjust Line Width 2. Dip the tip of the ruling pen into your chosen medium – ink, paint, gouache, or masking fluid. Ensure the fluid is held between the nibs by capillary action without overflowing. — Load with Fluid 3. Hold the pen perpendicular to the paper and draw smoothly. For masking fluid, let it dry completely before painting over the masked areas. Once your painting is dry, gently remove the masking fluid. — Draw Your Lines ## Product details | Field | Value | |---|---| | Ink Color Compatibility | Multicolor (works with ink, paint, gouache, masking fluid) | | Nib Pliability | Not Pliable | | Recommended Uses | Calligraphy, Drawing, Drafting, Cartography, Painting, Sketching | | How to Use | Adjust to desired line width, dip in fluid, and draw. Let masking fluid dry before painting, then remove. | | Line Width Adjustment | Adjustable via side screw | | Age Range | Adult | | Water Resistance Level | Not Water Resistant | | Brand | LOONENG | | Model Name | RP23A001 | | Part Number | RP23A001 | | Style | Cross Hinged | | Material | Stainless Steel | | Color | Green | | Point Type | Fine | | Line Size | 0.1mm | | Unit Count | 1 Count (Pack of 1) | | Item Package Weight | 0.009 kilograms | | Item Dimensions | 15.75 cm x 0.71 cm x 3.71 cm (Length x Width x Height) | | Country of Origin | Not stated by manufacturer — US retail version, sourced from authorized US retailers | ## Frequently asked questions ### How is this LOONENG Ruling Pen authentic vs the version sold in Indian stores? This LOONENG Ruling Pen is sourced directly from authorized US retailers, factory-sealed, and imported per-order. It is the same SKU and formulation US buyers receive. All customs duties and GST are included in the displayed price, ensuring a transparent cost. Arrives 2-8 days via ExpressBox tracked shipping to your pincode. ### Will the ruling pen I receive match what is shown on the US retailer's page? Yes, orders are placed against the listed US retailer page at the time of purchase. Batch codes, packaging, and labels match what the US retailer dispatches. Photographs of every order are taken before international handover for your verification. ### What is the best way to use this ruling pen for masking fluid? Adjust the ruling pen to your desired fine line width using the side screw. Dip the nib into masking fluid, ensuring not to overfill. Draw your lines onto the paper. Allow the masking fluid to dry completely before applying watercolor or paint. Once your artwork is dry, gently remove the masking fluid to reveal the unpainted areas. ### Can I use this ruling pen for technical drawing and cartography in India? Yes, this ruling pen is specifically designed for fine line drawing, cartography, and technical drawings. Its adjustable width and precise stainless steel nib allow for accurate, consistent lines essential for detailed maps and technical illustrations. It's a professional-grade tool for artists and designers in India. ### What kind of ink or paint can I use with this ruling pen? This ruling pen is suitable for use with ink, paint, gouache, and drawing fluids with appropriate viscosity. It is particularly effective for applying masking fluid for watercolor techniques. Ensure your medium has a flow consistency that allows it to be held by capillary action between the nibs. ### How do I clean and maintain the LOONENG ruling pen? After each use, carefully rinse the ruling pen nib with water and gently wipe it clean with a soft cloth. Ensure all ink, paint, or masking fluid residue is removed to prevent clogging. The durable stainless steel construction makes it easy to clean and maintain for long-lasting accuracy. ## Compliance No product-specific compliance warnings identified. Standard imported-goods terms apply: customs duties & GST paid; for personal use in India; follow the manufacturer's usage instructions on the packaging. ## Images 1. https://images.crowcrowcrow.com/B0CCPJQHYZ-0.webp 2. https://images.crowcrowcrow.com/B0CCPJQHYZ-3.webp 3. https://images.crowcrowcrow.com/B0CCPJQHYZ-6.webp 4. https://images.crowcrowcrow.com/B0CCPJQHYZ-9.webp 5. https://images.crowcrowcrow.com/B0CCPJQHYZ-12.webp 6. https://images.crowcrowcrow.com/B0CCPJQHYZ-15.webp --- Source: https://crowcrowcrow.com/p/looneng-ruling-pen-masking-fluid-cross-hinged-fine-line-drawing-technical-suitable-use-ink/urr5248 Returns: 14 days, free pickup, full refund on genuine issues. Shipping: Free across India, 13-16 days. Prices are all-inclusive (duties + GST).