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Blundell Harling Ltd
Portland Time Speed and Distance Calculator (Small)
Portland Time Speed and Distance Calculator (Small)
SKU:PLA0157
Regular price
£9.23 GBP
Regular price
Sale price
£9.23 GBP
UK taxes included where applicable. Export prices are excluding VAT.
Shipping calculated at checkout.
The Portland Time, Speed and Distance Calculator (Small) offers precise navigation calculations in a compact format. Designed for skippers, students, and instructors needing a portable TSD tool on board.
- Simple slide rule operation: Determine time, speed, or distance instantly from the other two values
- Clear printed scales: Support quick checks for passage planning and position fixing
- High-impact plastic outer sleeve: Built to withstand regular marine use
- Compact size: Ideal for small chart tables and grab-bag navigation kits
- NATO size option available: Match calculator size to your preferred working area
A practical, space-saving navigation aid for everyday coastal cruising and training.
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