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Brunton Granulometric Scale Grain Size Card

Brunton Grain Size Card for geologists, made of durable, waterproof, transparent material. Features 10 grain size classifications, a PHI scale, and an integrated millimeter ruler for accurate field measurements.

Description

The Brunton Grain Size Card is an essential field tool for geologists, designed for the visual classification of sediment based on grain size and shape. Made from durable, waterproof, and transparent material, this lightweight card withstands all weather conditions. It features both positive and negative sides to facilitate accurate grain size comparisons and direct readings in the field.

SPECIFICATIONS:
➢ 10 grain size classifications, including the PHI scale
➢ Visual reference for grain shapes
➢ Integrated millimeter ruler for direct measurement

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DescriptionBrunton Grain Size Card for geologists, made of durable, waterproof, transparent material. Features 10 grain size classifications, a PHI scale, and an integrated millimeter ruler for accurate field measurements.The Brunton Lite Tech 8×22 Monocular offers 8x magnification and multi-coated optics with BaK-4 prisms for sharp, bright images. Compact, lightweight, and ergonomic, it's perfect for outdoor observation, sports, or everyday activities. It fits easily in your pocket and can be comfortably operated with one hand.Brunton Transit 5005 Compass – Precision professional compass for geology, surveying, and engineering. Features a rugged aluminum body, ±90° vertical angle measurement, induction damping, and waterproof sealing—engineered for accuracy in the harshest field conditions.Brunton TruArc No. 10 Compass with global needle, tool-free declination adjustment, and magnified readout. Compact, lightweight, and built for precision in demanding conditions. Made in the USA, ideal for explorers and professionals.
Brunton 5030 Geo Lite Transit is a lightweight, durable, and functional mirrored compass designed for students and field geologists. It offers essential strike and dip measurements, dual clinometers, and a built-in protractor—perfect for accurate field mapping in a compact format.
The Brunton Omnisight is a rugged optical compass that delivers fast, accurate horizontal bearings with multiple integrated scales—Azimuth, Quadrant, MILS, and reciprocal. Built from CNC-machined aluminum with LED lighting and up to 10x magnification, it’s ideal for geology, surveying, and field navigation—even in low-light conditions.
ContentThe Brunton Grain Size Card is an essential field tool for geologists, designed for the visual classification of sediment based on grain size and shape. Made from durable, waterproof, and transparent material, this lightweight card withstands all weather conditions. It features both positive and negative sides to facilitate accurate grain size comparisons and direct readings in the field. SPECIFICATIONS: ➢ 10 grain size classifications, including the PHI scale ➢ Visual reference for grain shapes ➢ Integrated millimeter ruler for direct measurementThe Brunton Lite Tech 8x22 Monocular combines power, portability, and optical clarity in a compact and ergonomic design. Thanks to its high-quality BaK-4 prisms and multi-coated optics, it delivers sharp and clear images, ideal for hiking, sporting events, or field studies. Its compact design fits easily into your pocket, and the ergonomic structure offers comfort when held with one hand. With a close focus of 3 meters, it is a practical and versatile tool for everyday outdoor use. SPECIFICATIONS: ➢ Brand: Brunton ➢ Model: Lite Tech 8x22 ➢ Magnification: 8x ➢ Objective diameter: 22 mm ➢ Prism type: BaK-4 ➢ Close focus: 3 m (10 feet) ➢ Eye relief: 12 mm ➢ Exit pupil: 2.4 mm ➢ Dimensions: 3.3 x 8.4 cm ➢ Weight: 57 g ➢ Included accessories: Cleaning cloth, wrist strap, protective case FEATURES: ➢ Bright and clear image thanks to multi-coated optics and BaK-4 prisms ➢ Ergonomic design for a comfortable and secure grip ➢ Compact and lightweight: fits in any pocket ➢ Ideal for outdoor observation, sports, and everyday use ➢ Includes case and wrist strap for safe transportThe Brunton Transit 5005 is a high-precision professional compass, designed for demanding applications in geology, surveying, and engineering. Its rugged cast aluminum construction and waterproof, dustproof sealing make it reliable even in the harshest environments. This international version offers global versatility thanks to its low center-of-gravity needle and 0° to 90° scale, making it ideal for detailed angular measurements. Its design includes a precision alignment mirror and durable components, making it an essential tool for high-accuracy fieldwork. FEATURES: ➢ Reading scale: 0° to 90°, ideal for vertical angle measurements. ➢ Alnico V magnetic needle: Quick alignment with magnetic north. ➢ Low center of gravity: Ensures effective operation across various global regions. ➢ Vertical angle measurement: ±90° or 100% grade. ➢ Percent grade scale: With 5% increments for slope analysis. ➢ Induction damping: Provides fast and stable needle readings. ➢ Sapphire bearing: Ensures smooth and precise needle movement. ➢ Magnetic declination adjustment: East/west adjustment up to ±180°. ➢ Short and long sights: For increased precision in azimuth and vertical measurements. ➢ Precision mirror with see-through sight: Enhances accuracy when taking bearings. ➢ Cast aluminum body: Exceptional resistance to impact and long-term use. ➢ Ball-and-socket tripod mount: Improves field stability and measurement accuracy. ➢ Silicone sealing: Full waterproofing and high reliability. ➢ Includes: Premium leather case. ➢ Origin: Made in the USA (Riverton, Wyoming).The Brunton TruArc No. 10 Compass is an advanced, reliable, and durable navigation tool—ideal for explorers, mountaineers, and professionals who require precision in demanding conditions. Its mirrorless design features a global needle and multiple integrated scales, allowing for versatile use anywhere in the world, even alongside GPS systems. Compact, lightweight, and made in the USA, it combines ergonomic comfort with high functionality to deliver accurate readings on every expedition. SPECIFICATIONS: ➢ TruArc™ Global Needle: Tilts up to 20° for stable performance worldwide. ➢ Tool-free declination adjustment: Quick and easy way to align magnetic north with true north. ➢ Magnified readout: Increases precision without compromising readability. ➢ Integrated Romer scales: Maximum latitude and longitude accuracy for GPS use. ➢ Meridian lines: Help align with map grid lines during trip planning. ➢ Reversible inch and millimeter scales: Accurate for detailed map work. ➢ Double-gauge ergonomic baseplate: Durable and comfortable to hold. ➢ Removable high-visibility cling: Enhances performance in low-light conditions. ➢ EverNorth™ Magnet: Highly resistant to long-term demagnetization. ➢ 1° azimuth ring resolution: Provides precise and reliable readings. ➢ Manufactured in Riverton, Wyoming, USA. ➢ Dimensions: 13.2 x 7.1 x 1.2 cm ➢ Weight: 48 g (1.7 oz)The Brunton 5030 Geo Lite Transit is a mirrored, flat-base compass specifically designed for students and field geologists who need a lightweight, precise, and functional tool without sacrificing the essential capabilities of a traditional transit. Inspired by the design of the Geo Transit model, the Geo Lite delivers reliable performance in a more compact format. It features two clinometers (plumb-style and hinge-style), allowing for effective dip and dip azimuth measurements. It also includes an integrated protractor for direct plotting of data on topographic maps during fieldwork. Its transparent base is hot-stamped for enhanced durability, and the flat structure allows for accurate measurements even at low angles. Additionally, the lid is made from recycled glass-filled PA (polyamide), providing greater resistance to long-term use. SPECIFICATIONS: ➢ Dimensions: 10.16 × 6.3 × 1.5 cm (4” × 2.5” × 0.6”)
➢ Weight: 68 g (3.2 oz)
➢ Azimuth: ±1° with 2° graduations
➢ Hinge clinometer: ±2.5° with 5° graduations
➢ Internal clinometer (plumb-style): ±2.5° with 5° graduations
➢ Magnetic declination adjustment: ±180° (tool-free) FEATURES:
➢ Direct-read azimuth system in transit style
➢ Slim needle for more accurate readings
➢ Fixed plumb-style clinometer, unaffected by declination adjustment
➢ Hinge clinometer for simultaneous dip/dip azimuth measurements
➢ Integrated protractor for mapping and plotting in the field
➢ Bubble level for improved strike measurement accuracy
➢ 2° resolution for azimuth readings, 5° resolution for clinometer readings
➢ Durable EverNorth magnet, resistant to long-term demagnetization
➢ Integrated map magnifier on the base
➢ Sighting mirror for precise directional readings
➢ Romer scales included for GPS compatibility
➢ Flat base for accurate measurements at low angles
➢ Hot-stamped baseplate for enhanced wear resistance
➢ Lid made of recycled, glass-filled polyamide for extended durability
➢ Made in the USA, in Riverton, Wyoming
➢ Perfect as a primary compass or a reliable backup for extended fieldwork  
Brunton Omnisight is a spot-through optical compass that integrates multiple measurement scales into a single portable instrument, offering fast and precise horizontal bearing readings in demanding environments. Its design allows for both direct and reciprocal readings, and it supports multiple scale types including Azimuth (360°), Quadrant (90°), and MILS (0–6400 points). Built with a solid CNC-machined anodized aluminum housing, the Omnisight ensures durability and ruggedness. A silicone cover adds comfort and shock absorption during use. With its adjustable magnifying lens and integrated LED lighting system, this compass is ideal for low-light conditions. It can be used as a standalone instrument or mounted on a Jacob’s Staff or non-magnetic tripod, making it a versatile and essential tool for professionals in geology, surveying, mapping, and navigation. SPECIFICATIONS: ➢ Dimensions: 76.3 × 8.8 × 1.3 cm (2.5" × 3.5" × 0.5") ➢ Weight: 335.6 g (11.8 oz) ➢ Angular resolution: 1° ➢ Measurement range: 180° FEATURES: ➢ High-precision horizontal bearing measurement through direct optical sighting. ➢ Four integrated reading scales: ■MILS scale: 0 to 6400 points ■Quadrant: 0° to 90° ■Direct azimuth: 0° to 360° ■Reciprocal azimuth: 0° to 360° ➢ Dual display on the top dial with 5° graduations. ➢ Sapphire jewel bearing with anti-static damping fluid for smooth needle movement. ➢ Adjustable lens with up to 10x magnification for more accurate distance readings. ➢ CNC-anodized aluminum housing, robust and impact-resistant. ➢ Ergonomic silicone cover, non-slip and shock-absorbing. ➢ Available models for the Northern Hemisphere, Equatorial, and Southern Hemisphere. ➢ Compatible with Jacob’s Staff or non-magnetic tripod via integrated thread. ➢ Built-in LED lighting, ideal for use in low-visibility conditions. ➢ Includes a protective leather case for safe and professional transport. ➢ Made in the USA, in Riverton, Wyoming.
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