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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 Get-Back Mini GPS is a compact and easy-to-use locator designed to guide you back to up to three saved locations using a directional arrow. It offers high accuracy, a backlit digital display, and up to 13 hours of rechargeable battery life. Perfect for hiking, fishing, and outdoor activities.Brunton ComPro Transit 5008 is an ultralight, durable compass designed for precise strike and dip measurements. With its bakelite body and floating capability, it’s perfect for demanding fieldwork in rugged or wet environments.Brunton Transit 5020 Compass – Precision compass for strike and dip measurements, built with a rugged CNC-machined body, flat non-slip base, and high-accuracy needle system. Ideal for geologists and field professionals seeking durability, stability, and waterproof performance in challenging environments.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.The Brunton Echo 7×18 Monocular combines portability and quality optics in a compact design. With 7x magnification, multi-coated lenses, and a BaK-4 prism, it delivers sharp images even at close range. Ideal for hiking, sports, or field use, it fits in your pocket and can be easily operated with one hand.
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 measurementBrunton Get-Back Mini GPS is a compact and reliable device, designed to help you return to your starting point via the shortest and most direct route possible. You can save up to three different locations, and the device will guide you back using a directional arrow on its digital screen, indicating the distance in miles or meters. Ideal for outdoor activities, this GPS ensures that you never lose your way back. SPECIFICATIONS: ➢ Accuracy: ±3.6 m (12 feet) in normal GPS mode ➢ Waypoint capacity: Up to 3 saved locations ➢ Display: Digital with blue backlight ➢ Signal strength indicator and battery life function ➢ Self-calibrating digital compass ➢ Battery: Rechargeable, up to 13 hours of continuous use ➢ Charging: USB cable included / Compatible with Brunton SyncTech (solar panels or power packs) ➢ Arrival notification: Within 9 m (30 feet) of destination FEATURES: ➢ Ultra-compact and easy-to-use design ➢ Intuitive directional guidance via arrow ➢ Distance display in meters or miles ➢ Ideal for hiking, hunting, fishing, and exploring ➢ Quick return function with high precisionBrunton 5008 ComPro Transit is the perfect choice for those seeking a lightweight, durable, and functional mapping instrument. Designed for explorers and professionals working in demanding conditions, this compass retains all the internal components of Brunton’s classic models but features an ultralight bakelite body, making it the lightest in the series. Ideal for extended fieldwork, the ComPro offers precision, durability, and comfort without compromising performance. Additionally, its floating design provides extra safety in wet or aquatic environments. SPECIFICATIONS: ➢ Measurement Style: Strike & Dip
➢ Dimensions: 10 × 7 × 3 cm (3.9" × 2.8" × 1.2")
➢ Weight: 162 g (5.7 oz)
➢ Azimuth Scale: ±0.5°, with 1° graduations
➢ Internal Clinometer: ±0.5°, with 1° graduations
➢ Percent Grade Scale: 5% increments
➢ Magnetic Declination Adjustment: ±180° FEATURES: ➢ Ultralight design, made of high-strength bakelite
➢ Floats on water – ideal for work in humid areas, rivers, or bodies of water
➢ Traditional transit measurement method, perfect for professionals in geology and surveying
➢ Built-in mirror for accurate bearing and vertical angle measurements
➢ Short and long sights for improved target alignment accuracy in the field
➢ High-precision NdFeB disc magnet, highly resistant to demagnetization
➢ Balanceable magnetic needle, adaptable for use in various geographic regions
➢ Induction damping for quick and reliable needle stabilization
➢ Sapphire jewel bearing for smooth, long-lasting needle movement
➢ Needle lock button to secure or release the needle, depending on the model
➢ Sealed internal components with O-ring for enhanced protection against dust and moisture
➢ Fully compatible with Jacob’s Staff/tripod ball-and-socket adapters
➢ Available in Azimuth (0–360°) or Quadrant (0–90°) formats
➢ Includes a protective leather case, ideal for safe transport in field conditions
➢ Made in the USA, in Riverton, Wyoming
The Brunton Transit 5020 Compass combines the classic precision of traditional navigation instruments with a modern, rugged design—ideal for professionals in geology, engineering, and demanding fieldwork. It retains traditional strike and dip measurement functions while improving stability for low-angle readings thanks to its flat base and non-slip silicone foot. Its CNC-machined, hard-anodized body ensures durability, while sealed internal components provide enhanced resistance to water and dust. Comes with a high-quality leather case. SPECIFICATIONS: ➢ Measurement type: Strike & Dip (Bearing and Inclination) ➢ Azimuth scale: 0° to 360°, with ±0.5° accuracy and 1° graduations ➢ Internal clinometer: ±0.5° with 1° graduations ➢ Percent grade scale: 5% increments ➢ Magnetic declination adjustment: ±180° ➢ Dimensions: 7.9 x 7.1 x 3.4 cm (3.1” x 2.8” x 1.3”) ➢ Weight: 195 g (6.9 oz) FEATURES: ➢ CNC-machined and hard-anodized body for enhanced durability ➢ Flat base with non-slip silicone foot for stable low-angle readings ➢ Alignment mirror for accurate horizontal and vertical angle readings ➢ Long and short sighting arms for precise measurement taking ➢ High-precision NdFeB disk magnet with excellent demagnetization resistance ➢ Induction damping for fast needle stabilization ➢ Sapphire bearing ensures smooth and long-lasting needle movement ➢ Needle lock button for securing or releasing the needle as needed ➢ Sealed internal components with O-ring for superior dust and moisture protection ➢ Compatible with tripod or Jacob’s Staff ball adapter ➢ Comes with a protective leather field case ➢ Available in Azimuth format (0–360°)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.The Brunton Echo 7x18 Monocular delivers impressive optical performance in a compact and portable design. It is equipped with multi-coated lenses and high-quality BaK-4 prism glass, which provide bright, sharp, and clear images—even at a close focusing distance of just 33 cm. Its 7x magnification with an 18 mm objective lens is ideal for quick and precise observation during outdoor activities, hikes, sports events, or field studies. Ergonomically designed for comfortable one-handed use, it fits easily in your pocket, making it an essential companion for adventurers and observers. SPECIFICATIONS: ➢ Brand: Brunton ➢ Model: Echo 7x18 ➢ Magnification: 7x ➢ Objective diameter: 18 mm ➢ Prism type: BaK-4 ➢ Minimum focus: 33 cm (1.1 feet) ➢ Eye relief: 12 mm ➢ Exit pupil: 2.6 mm ➢ Dimensions: 3.3 x 8.4 - 10.7 cm ➢ Weight: 51 g ➢ Included accessories: Cleaning cloth, wrist strap, protective case FEATURES: ➢ Bright and clear image thanks to multi-coated lenses and BaK-4 prisms ➢ Ergonomic design for a comfortable and secure grip ➢ Ideal for field use, hikes, sports events, and more ➢ Pocket-size, perfect to carry anywhere ➢ Includes case and strap for safe transport and storage
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