--- product_id: 14192380 title: "Dwyer Slack Tube Series 1211 Handy Roll-Up Manometer, Pressure Range 100-0-100cm WC" brand: "dwyer" price: "VT121373" currency: VUV in_stock: true reviews_count: 5 url: https://www.desertcart.vu/products/14192380-dwyer-slack-tube-series-1211-handy-roll-up-manometer-pressure store_origin: VU region: Vanuatu --- # Pressure Range: 100-0-100cm WC Max Pressure: 50psi Vacuum: Up to 20" Hg Dwyer Slack Tube Series 1211 Handy Roll-Up Manometer, Pressure Range 100-0-100cm WC **Brand:** dwyer **Price:** VT121373 **Availability:** βœ… In Stock ## Summary > πŸ“Š Measure with Confidence: Your Go-To Tool for Precision Pressure Testing! ## Quick Answers - **What is this?** Dwyer Slack Tube Series 1211 Handy Roll-Up Manometer, Pressure Range 100-0-100cm WC by dwyer - **How much does it cost?** VT121373 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/14192380-dwyer-slack-tube-series-1211-handy-roll-up-manometer-pressure) ## Best For - dwyer enthusiasts ## Why This Product - Trusted dwyer brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Durable Construction:** Crafted with acrylic plastic and vinyl tubing, ensuring longevity and reliability in various environments. - β€’ **User-Friendly Design:** Roll-up feature allows for easy transport and storage, making it ideal for on-the-go professionals. - β€’ **Precision Measurement:** Achieve accurate readings with a flexible spring-steel scale that eliminates parallax errors. - β€’ **Versatile Applications:** Perfect for fan and blower tests, gas pressure evaluations, and calibration tasks. - β€’ **Customizable Calibration:** Calibrated in inches of water, compatible with mercury or fluorescein green concentrate for tailored measurements. ## Overview The Dwyer Slack Tube Series 1211 Handy Roll-Up Manometer is a versatile and durable instrument designed for measuring static, vacuum, and differential pressure in various applications, including fan tests and gas evaluations. With a maximum pressure of 50psi and a vacuum capability of up to 20" Hg, this manometer combines precision with portability, making it an essential tool for professionals in the field. ## Description The Dwyer 1211 series slack-tube roll-up manometer measures static, vacuum, and differential pressure of air and gas in fan and blower tests, gas pressure evaluation, and calibration applications. The manometer has an acrylic plastic top, connectors, and over-pressure traps for use with testing air and gas, and vinyl tubing for use with mercury (sold separately) or water with fluorescein green concentrate (sold separately). The manometer is calibrated in inches of water using water and is suitable for use with mercury or water with fluorescein green concentrate measuring fluids (sold separately). The connectors accept 1/8" tubing and can be turned to seal the fluids during storage or transport. The flexible spring-steel scale is mounted between the columns to eliminate parallax reading errors, and the 2" sliding zero adjustment provides zeroing capability. The manometer has a maximum intermittent total pressure of 50psi and vacuum up to 20 inHg. The manometer can be hung or mounted using the attached magnets.SpecificationsPressure typesStatic, vacuum, and differentialMedia typeAir and gasWetted parts materialAcrylic plasticCase materialVinyl tubingScaleInches of water, inches of mercuryPressure rangeVariesFluid typeWater colored with green concentrate or mercuryConnection1/8"MountMagnetic clipsMaximum pressure50psi, intermittentlyMaximum vacuum20" Hg (10" Hg absolute), intermittentlyMaximum temperature130 degrees FH is height, the vertical distance from the lowest to highest point; W is width, the horizontal distance from left to right; D is depth, the horizontal distance from front to back.Manometers measure the pressure of a liquid or gas. They are used in laboratory, medical equipment, engineering, automotive, and heating, ventilation, and air-conditioning applications. Manometers measure any combination of gauge, absolute, or differential pressures. Gauge pressure is the amount of pressure in a system relative to the ambient pressure, absolute pressure is the amount of pressure in a system relative to an absolute vacuum, and differential pressure is the difference between two pressures. Analog manometers are composed of columns of liquid, and they use gravity and the liquid's density to calculate pressure. Because they have no moving parts, analog manometers do not require re-calibration. Digital manometers have pressure sensors that are connected to a system with a hose to provide a digital readout of the amount of pressure present in a system. They use microprocessors to calculate pressure, and they require periodic calibration to help ensure accuracy.Dwyer Instruments manufactures measurement and control instruments, including pressure gauges, flow meters, level instrumentation, temperature instrumentation, and air quality monitors. The company, founded in 1931, is headquartered in Michigan City, IN. ## Features - Roll-up manometer measures static, vacuum, and differential pressure of air and gas in fan and blower tests, gas pressure evaluation, and calibration applications - Acrylic plastic top, connectors, and over-pressure traps and vinyl tubing for use with air and gas - Calibrated in inches of water using water for use with mercury or water with fluorescein green concentrate measuring fluids (sold separately) - Flexible spring-steel scale mounted between columns eliminates parallax reading errors, and 2" sliding zero adjustment provides zeroing capability - Maximum intermittent total pressure of 50psi, and vacuum up to 20" Hg ## Images ![Dwyer Slack Tube Series 1211 Handy Roll-Up Manometer, Pressure Range 100-0-100cm WC - Image 1](https://m.media-amazon.com/images/I/31dLR92zKLL.jpg) ![Dwyer Slack Tube Series 1211 Handy Roll-Up Manometer, Pressure Range 100-0-100cm WC - Image 2](https://m.media-amazon.com/images/I/414DjTE+LHL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐ Good Manometer *by N***Y on Reviewed in the United States πŸ‡ΊπŸ‡Έ on September 11, 2014* A nice unit to measure air flow with. Read the insert that comes with this so you know how to fill it initially - I read the main manual and it failed to describe in detail how to do this. It is a nice instrument and seems to be durable. ### ⭐⭐⭐⭐⭐ Staple in our tool boxes *by D***R on Reviewed in the United States πŸ‡ΊπŸ‡Έ on September 5, 2019* This is a tool we use to repair locomotives. Great tool! ### ⭐⭐⭐⭐⭐ Great tool at a great price *by C***C on Reviewed in the United States πŸ‡ΊπŸ‡Έ on January 12, 2018* Exactly what I needed to test blow-by on a diesel engine. The best price anywhere. --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.vu/products/14192380-dwyer-slack-tube-series-1211-handy-roll-up-manometer-pressure](https://www.desertcart.vu/products/14192380-dwyer-slack-tube-series-1211-handy-roll-up-manometer-pressure) --- *Product available on Desertcart Vanuatu* *Store origin: VU* *Last updated: 2026-05-07*