Testers & scales calibrated before despatch

Gem & precious metal testers, since 1986

Set of 18 clock keys

Set of 18 clock keys



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Pickup available from Quicktest (WD18 8PH)
Email us or call on 01923-220206 for appointment.


Boxed set of 18 sizes from size 000 to size 15.

Ingenious design, one large butterfly handle and 18 key-ends (stems), and the whole lot fits into a case measuring 85 X 55 X 20mm.


There are 18 KEY SIZES, if you're not sure which size you need? - see our conversion chart.

When checking that the winder is going to fit through the opening in the clock (irrespective of the key size), take note of the OUTER DIAMETER OF THE TUBING:

- sizes 000 to 3: 6mm

- sizes 4, 5, 6: 7mm

- sizes 8,9, 10: 8mm

- sizes 10, 11, 12: 9mm

- sizes 13,14,15: 10mm