JMK ONE Orienteering Thumb Compass

JMK COMPASS / ONE

ONE

Designed around thumb control.

An orienteering thumb compass designed around thumb control..

EXPLORE ONE
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THE CONTROL SYSTEM
Designed for quick, controlled movement across the map, balancing responsive handling with stable needle readings.

01
INWARD CONTROL
The dotted surface increases contact and friction under the thumb, allowing the compass to follow smoothly and precisely as the thumb moves inward.
02
OUTWARD CONTROL
The raised ledge provides a firm contact point, allowing the compass to follow quickly and precisely as the thumb moves outward.
03
NATURAL FIT
The compact body sits comfortably in the hand for quick, precise movement across the map.
04
BALANCED RESPONSE
The needle balances quick response to changes in direction with stable, reliable readings on the move.
ON THE MAP

ONE follows the thumb smoothly across the map, making it easier to track your position and keep the map oriented on the move.
DEVELOPMENT

Multiple Czech national team athletes contributed to the development and testing of ONE.

COMPETITION USE

Vojtěch Král used ONE at the World Orienteering Championships 2021 .

EriK Fey used ONE at the Season 2026 in Foot Orienteering
ONE
PRODUCT INFORMATION

Global Needle
Left-hand and right-hand versions
PC baseplate
Storage case included
Magnifier - planned
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Czech
Japan
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THE CONTROL SYSTEM