Artists frequently use "190x" to denote the size (usually in centimeters or millimeters) of their work:

"Featured Work: Acrylic and pencil on canvas paper. Size: 190x 250mm . Part of the 'Balancing Act' series exploring form and gravity." 📈 For Business and Tech Metrics

"Heading into the city? The 190X offers a direct express route from North Avalon to Wynyard. Check the latest schedule for minor adjustments to better align with morning demand." 🎨 For Art and Canvas Dimensions