Strap for Tonda Metrographe Stainless Steel / White / Strap

The lug width is 20mm. This dimension is proportioned to the 40mm case diameter and the balanced design philosophy of the Tonda. Measure the lug width by positioning a ruler or digital calliper at the widest point between the lug holes, excluding case elements. Confirming 20mm is essential before ordering an aftermarket strap.

Alligator leather with vegetable tanning is the ideal pairing: its symmetrical grain dialogue with the case geometry. Alternatively, natural calf with developed patina offers chromatic evolution over time, whilst shell cordovan provides structural rigidity and intrinsic lustre. For dynamic use, rubber or fabric NATO straps are equally versatile without aesthetic compromise.

Ensure you have spring bars of correct width for the 20mm lug measurement. Use a dedicated strap removal tool to compress the spring bar and extract it from the lugs without applying pressure to the case. Insert the new strap by aligning the lugs with the holes, verify complete spring bar insertion, and repeat for the opposite lug. If using a deployant clasp, ensure secure engagement before wearing.

Yes, provided the lug width is exactly 20mm. Quality aftermarket straps of equivalent manufacturing standards guarantee compatibility without modification. Verify that the strap is supplied with spring bars of appropriate length (typically 20-22mm for this category of integrated lugs). Milano Straps offers bespoke personalised straps in premium materials for your model.

A quality artisanal alligator or calf strap, used regularly (3-5 days weekly), has a lifespan of 4-6 years. Daily use reduces this estimate to 2-3 years. Vegetable tanning allows natural ageing and, in many cases, replacement of components (spring bars, buckle) without discarding the entire strap. The patina acquired over time represents added aesthetic value.