--- product_id: 50229895 title: "Ruling Pen for Masking Fluid, Perfect Fine Line Drawing, Technical Cartography and Calligraphy, Suitable Use with Drawing Ink, Indian Ink Gouache" brand: "looneng" price: "63 zł" currency: PLN in_stock: true reviews_count: 13 category: "Looneng" url: https://www.desertcart.pl/products/50229895-ruling-pen-for-masking-fluid-perfect-fine-line-drawing-technical store_origin: PL region: Poland --- # Versatile with inks & masking fluids Durable stainless steel build Adjustable line width precision Ruling Pen for Masking Fluid, Perfect Fine Line Drawing, Technical Cartography and Calligraphy, Suitable Use with Drawing Ink, Indian Ink Gouache **Brand:** looneng **Price:** 63 zł **Availability:** ✅ In Stock ## Summary > 🎯 Elevate your lines, own your craft — precision that speaks volumes. ## Quick Answers - **What is this?** Ruling Pen for Masking Fluid, Perfect Fine Line Drawing, Technical Cartography and Calligraphy, Suitable Use with Drawing Ink, Indian Ink Gouache by looneng - **How much does it cost?** 63 zł with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/50229895-ruling-pen-for-masking-fluid-perfect-fine-line-drawing-technical) ## Best For - looneng enthusiasts ## Why This Product - Trusted looneng brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Last:** Crafted from rust-resistant stainless steel with a balanced, lightweight design for fatigue-free artistry. - • **Effortless Clean-Up:** Smooth ink flow and easy-to-clean nib mean less downtime and more time creating your masterpiece. - • **Pro-Level Precision:** Ideal for technical cartography, calligraphy, and fine line drawing—engineered for professionals who demand perfection. - • **Multi-Medium Mastery:** Seamlessly works with Indian ink, gouache, masking fluid, and watercolors for diverse creative projects. - • **Pinpoint Line Control:** Screw-adjust mechanism lets you dial in exact line thickness from ultra-fine to bold strokes. ## Overview The LOONENG Ruling Pen is a premium stainless steel drawing tool designed for professionals and enthusiasts seeking precise, adjustable fine lines. Its screw-adjusted nib allows for customizable line widths, perfect for technical drawings, calligraphy, and masking fluid applications. Lightweight yet durable, it supports multiple ink types including Indian ink and gouache, ensuring smooth flow and easy cleaning for efficient, high-quality artistry. ## Description Product description LOONENG Ruling Pen for Masking Fluid, Perfect for Fine Line Drawing, Technical Drawing, Suitable for Use with Masking Fluid, Drawing Ink and Gouache Ruling pen is a drawing instrument for drawing with ink, paint, or any fluid medium with the viscosity to flow. The two parts of the ruling pen tip hold ink or with other drawing fluids between them by capillary action. It enables precise rendering of thin lines, the line width can be adjusted by turning the screw which connects the jaws. For drawing of lines and borders in ink, watercolors and gouache, and can be used for applying masking fluid. 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, 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 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, 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. Perfect for creating fine lines with masking fluid Once dry you can paint watercolors and inks over the masking fluid, and then once the paint is dry remove the masking fluid to reveal very fine lines of the unpainted areas. Here Are Some Tips on How to Use a Ruling Pen Effectively Select the Width with the Screw Adjuster 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. Scrape Ink with a Paintbrush for Control When loading ink, use a fine brush or a dropper is used to gently place the ink on the inside surface of the blade. The surface of the ruling pen is stained with ink and should be cleaned in time. Used to Draw Lines of Precise Thickness For technical drawing, for artists and architects. For applying mask fluid. For creating very fine lines that will be masked. For grasses, small branches, rope, and other fine details. Wiped Cleanly Remaining Ink After Use After use the pen, the remaining ink should be wiped cleanly, and the adjustment screw should be loosened to avoid the phenomenon of the deformation of the pen blade. Review: Works perfectly with both masking fluid and paint, cleans easily - I used this both with masking fluid to mask some light reflections on cold-press watercolor paper that needed to be regular lines. Just dipped it in bottle, keeping masking fluid well below hinge piece and the screw wheel. Practiced a second to get the angle right for a nice line on a scrap piece. Once you get the angle, it flows smoothly, and the weight is nice and feels balanced in your hand. Lines are clean and smooth, and the tool holds way more fluid than I had expected. No trouble with drips, and the wheel is great for adjusting the width of line as well as for clean up. For clean up, I used just a barely damp paper towel (damp from wiping my brush after painting and dip rinsing in clear water), and you couldn't even tell it had been used. Tried it out with some watercolor paint from a palette well to smooth a line in places, and it worked like a dream. Again, just dipped, gently and quickly stroked outside once against clean edge of palette well. No drips, no need to put in with a brush, at least for me. Clean up still fast and easy no residue. Excellent product. Review: It works better than anything I've used to apply resist for watercolor! - What I love: 1. It goes on smoothly 2. It adjusts between very fine lines for hair to thicker lines. 3. It cleans up completely and saves fine brushes. 4. The reservoir makes it possible to draw several fine lines before needing to dip again. This makes it quick so you can put the cap on in less time, therefore preventing the resist drying out. 5. I have only used this with Pebeo resist. I can't say it works as well using other products, because I haven't tied it with any other brands of resist. I am one happy girl! This reduced tons of frustration! ## 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. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B075B44QJ7 | | Additional Features | Adjustable Line Width | | Age Range (Description) | Adult | | Age Range Description | Adult | | Best Sellers Rank | #11,418 in Arts, Crafts & Sewing ( See Top 100 in Arts, Crafts & Sewing ) #163 in Drawing Pens | | Body Shape | Round | | Brand | LOONENG | | Brand Name | LOONENG | | Closure Type | screw | | Color | Green | | Customer Reviews | 4.5 out of 5 stars 2,248 Reviews | | Drill Point | Fine | | Grip Type | Soft | | Hand Orientation | Ambidextrous | | Ink Base | Water | | Ink Color | Black | | Item Dimensions | 4.92 x 0.2 x 0.2 inches | | Item Weight | 15 Grams | | Line Size | 0.5 millimeters | | Manufacturer | LOONENG | | Material | Stainless Steel | | Material Type | Stainless Steel | | Model Name | DA17A012 | | Model Number | DA17A012 | | Pattern | Solid | | Recommended Uses For Product | Drawing | | Style | Traditional | | Theme | Artistic Drawing Instruments | | UPC | 743270886737 | | Unit Count | 1 Count | | Water Resistance Level | Water Resistant | | Writing Instrument Form | Technical Pen | ## Product Details - **Age Range (Description):** Adult - **Brand:** LOONENG - **Color:** Green - **Ink Color:** Black - **Writing Instrument Form:** Technical Pen ## Images ![Ruling Pen for Masking Fluid, Perfect Fine Line Drawing, Technical Cartography and Calligraphy, Suitable Use with Drawing Ink, Indian Ink Gouache - Image 1](https://m.media-amazon.com/images/I/51CZlwtZP4L.jpg) ![Ruling Pen for Masking Fluid, Perfect Fine Line Drawing, Technical Cartography and Calligraphy, Suitable Use with Drawing Ink, Indian Ink Gouache - Image 2](https://m.media-amazon.com/images/I/71FmEO75zcL.jpg) ![Ruling Pen for Masking Fluid, Perfect Fine Line Drawing, Technical Cartography and Calligraphy, Suitable Use with Drawing Ink, Indian Ink Gouache - Image 3](https://m.media-amazon.com/images/I/71+zKJJEEkL.jpg) ![Ruling Pen for Masking Fluid, Perfect Fine Line Drawing, Technical Cartography and Calligraphy, Suitable Use with Drawing Ink, Indian Ink Gouache - Image 4](https://m.media-amazon.com/images/I/81NNBlmt3rL.jpg) ![Ruling Pen for Masking Fluid, Perfect Fine Line Drawing, Technical Cartography and Calligraphy, Suitable Use with Drawing Ink, Indian Ink Gouache - Image 5](https://m.media-amazon.com/images/I/71753Epyz9L.jpg) ## Available Options This product comes in different **Color, Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works perfectly with both masking fluid and paint, cleans easily *by S***M on August 24, 2024* I used this both with masking fluid to mask some light reflections on cold-press watercolor paper that needed to be regular lines. Just dipped it in bottle, keeping masking fluid well below hinge piece and the screw wheel. Practiced a second to get the angle right for a nice line on a scrap piece. Once you get the angle, it flows smoothly, and the weight is nice and feels balanced in your hand. Lines are clean and smooth, and the tool holds way more fluid than I had expected. No trouble with drips, and the wheel is great for adjusting the width of line as well as for clean up. For clean up, I used just a barely damp paper towel (damp from wiping my brush after painting and dip rinsing in clear water), and you couldn't even tell it had been used. Tried it out with some watercolor paint from a palette well to smooth a line in places, and it worked like a dream. Again, just dipped, gently and quickly stroked outside once against clean edge of palette well. No drips, no need to put in with a brush, at least for me. Clean up still fast and easy no residue. Excellent product. ### ⭐⭐⭐⭐⭐ It works better than anything I've used to apply resist for watercolor! *by K***S on December 16, 2024* What I love: 1. It goes on smoothly 2. It adjusts between very fine lines for hair to thicker lines. 3. It cleans up completely and saves fine brushes. 4. The reservoir makes it possible to draw several fine lines before needing to dip again. This makes it quick so you can put the cap on in less time, therefore preventing the resist drying out. 5. I have only used this with Pebeo resist. I can't say it works as well using other products, because I haven't tied it with any other brands of resist. I am one happy girl! This reduced tons of frustration! ### ⭐⭐⭐⭐⭐ Watercolor painting has just became easier *by C***R on April 28, 2026* I love this tool! If you having difficulties using masking fluid this tool will help you immensely, don't hesitate buy it now. It is so easy to use and clean up afterwards! Seems to be made very well and I love the way you can change your line thickness with just a quick twist of a little screw on the side of it. Came in quickly and it is definitely worth the money that I spent! ## Frequently Bought Together - LOONENG Ruling Pen for Masking Fluid, Perfect Fine Line Drawing, Technical Cartography and Calligraphy, Suitable Use with Drawing Ink, Indian Ink Gouache - Pebeo Easy Peel Liquid Latex Masking Fluid - Drawing Gum - Dries Quickly - For Ink - Watercolor - Gouache Painting & Illustration - Fine Arts & Crafts Supplies - 45ml Bottle - Creative Mark Masking Fluid Paint Brushes (Set of 10) - Watercolor Brushes Contains Synthetic Hair w/Short Wood Handles --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pl/products/50229895-ruling-pen-for-masking-fluid-perfect-fine-line-drawing-technical](https://www.desertcart.pl/products/50229895-ruling-pen-for-masking-fluid-perfect-fine-line-drawing-technical) --- *Product available on Desertcart Poland* *Store origin: PL* *Last updated: 2026-05-09*