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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 Axis 5012 Transit Compass offers simultaneous measurements of strike & dip, dip azimuth, and trend & plunge with unmatched precision. Its dual-axis hinge and 360° rotating lid allow accurate readings on any surface—even overhead—making it the ideal tool for geologists and field professionals working in complex environments.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 TruArc No. 15 Compass with global needle, dual clinometers, and tool-free declination adjustment. Designed for precise navigation, slope measurement, and elevation in demanding field conditions. Includes sighting mirror, bubble level, and map magnifier. Made in the USA.The Brunton Ball & Socket Mount provides stable, tripod-based support for Brunton Transit compasses, allowing precise azimuth and inclination measurements. Its durable, non-magnetic design ensures accuracy in field conditions—ideal for geologists and surveyors.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.
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 5012 Axis redefines the concept of a transit compass, offering a modern, precise, and highly efficient solution for structural data collection in the field. Designed by geologists for geologists, it enables simultaneous measurements of strike & dip, dip & dip azimuth, and trend & plunge, optimizing both time and accuracy during fieldwork. Thanks to its innovative dual-axis hollow hinge design, the Axis allows measurements on any surface—even on overhangs or ceilings. Its 360° rotating lid on both axes, combined with an automatic needle lock system and multiple visual reference points, makes this compass an essential tool for professionals who demand precision and speed in challenging environments. SPECIFICATIONS: ➢ Measurement Style: Simultaneous and versatile (Strike & Dip, Dip & Azimuth, Trend & Plunge)
➢ Dimensions: 10 × 7 × 3 cm (3.9" × 2.8" × 1.2")
➢ Weight: 341.6 g (12.1 oz)
➢ Azimuth Scale: ±0.5°, with 1° graduations
➢ Hinge Dial: ±1°, with 2° graduations
➢ Plumb Clinometer: ±0.5°, with 1° graduations
➢ Lid Protractor: ±0.5°, with 1° graduations
➢ Magnetic Declination Adjustment: ±180° FEATURES: ➢ Patented dual-axis hollow hinge design allows for precise measurements in any orientation
➢ 360° rotating lid on both axes, ideal for measuring on complex surfaces such as ceilings or inclined structures
➢ Simultaneous measurements of strike & dip, dip & dip azimuth, or trend & plunge with minimal adjustments
➢ Integrated sighting tube for direct horizontal and vertical measurements
➢ Multi-function hinge dial, useful both as a clinometer and protractor
➢ Excellent contact and sighting capability, even in difficult conditions
➢ Dual long-level bubbles allow for leveling from both the sides and base
➢ Flat bottom, perfect for low-angle measurements with enhanced stability
➢ Automatic needle lock, ensuring accuracy when the instrument face is not directly visible
➢ High-precision NdFeB magnet, highly resistant to demagnetization
➢ Adjustable magnetic needle, balanced for use almost anywhere in the world
➢ Induction damping allows the needle to settle quickly
➢ Sapphire jewel bearing, ensuring smooth and durable needle movement
➢ Internally sealed components with O-ring for maximum resistance to dust and moisture
➢ Compatible with Jacob’s Staff/tripod ball adapter, suitable for various field configurations
➢ Available in Azimuth (0–360°) and Quadrant (0–90°) formats
➢ Includes protective leather case, ideal for safe transport in the field
➢ Made in the USA, in Riverton, Wyoming  
The 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 TruArc No. 15 Compass is a professional-grade navigation tool built for the most demanding field conditions. Designed for mountaineers, rescue teams, scientists, and explorers, it features a mirrored baseplate and dual clinometers (internal and lid-mounted) for accurately measuring slope angles and elevations. Its global needle provides stable readings anywhere in the world, while its durable, high-visibility design ensures accurate orientation in even the toughest environments. SPECIFICATIONS: ➢ TruArc™ Global Needle: Tilts up to 20° for reliable performance worldwide. ➢ Tool-free declination adjustment: Quickly aligns magnetic north with true north. ➢ Meridian lines on vial: Assist in aligning with map grids during trip planning. ➢ Inch and millimeter scales: Enable precise measurements in any mapping system. ➢ EverNorth™ Magnet: Resists demagnetization over time for long-term reliability. ➢ Magnified readout: Offers high precision without sacrificing readability. ➢ Dual azimuth ring: Includes reverse azimuth capability. ➢ Integrated sighting mirror and line: Ensures accurate bearings when taking or following a direction. ➢ Dual clinometers (in lid and vial): 2° resolution for measuring slope or object heights. ➢ Engineer’s ruler: Useful for technical field measurements. ➢ Bubble level: Ensures compass is level for accurate readings. ➢ Map magnifier: Helps identify small details in map work. ➢ Removable high-visibility cling: Enhances performance in low-light environments. ➢ 1° resolution azimuth ring: For precise directional readings. ➢ Dimensions: 4” x 2.5” x 0.6” | 10.16 x 6.3 x 1.5 cm ➢ Weight: 3.2 oz | 91 g ➢ Made: In the USA Riverton, Wyoming.The Brunton Ball & Socket mount is an essential accessory for users seeking greater stability and precision when taking measurements with Transit-style compasses. Specifically designed for Brunton models, this mount allows the compass to be securely attached to a tripod or monopod, enabling highly accurate azimuth and inclination readings without magnetic interference. Its compact and durable design, made from non-ferromagnetic materials, makes it ideal for geologists, surveyors, and field professionals who require maximum accuracy in demanding environments. SPECIFICATIONS: ➢ Materials: High-strength aluminum and brass ➢ Thread type: Standard 1/4" – 20 (compatible with most tripods and monopods) ➢ Compatibility: Exclusive for Brunton Transit compasses ➢ Function: Ball-and-socket mount for free orientation and inclination adjustmentBrunton 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
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