3 ms·
"there’s no way to tell when a marker is running low" Hm, maybe that's a problem that can be solved and earn the inventor good money?
by facepalm 11y ago
"there’s no way to tell when a marker is running low"
Hm, maybe that's a problem that can be solved and earn the inventor good money?
- benplumley 11y agoFor a product that's disposable, I doubt any such system could justify its cost.
- noir_lord 11y agohttp://i.imgur.com/UDAZQUI.jpg http://i.imgur.com/UDAZQUI.jpg Depends on the cost to implement and the margin you can charge over competitors I guess.
- Symbiote 11y agoThe whiteboard pens we have at work have a semi-transparent barrel: http://www.postofficeshop.co.uk/images/product/extraLarge/2/D8348_L.jpg http://www.postofficeshop.co.uk/images/product/extraLarge/2/...