Digital scales

This week I've acquired some digital scales:
 - Argos Value Range Electronic Kitchen Scale - 1g-4999g = £3.99 (collected)
 - Lupo Digital Scale (via eBay) - 0.1g-999.9g = £7.10 (including £1.99 delivery)

And here they are compared, weighing a couple of camera batteries:

Actual component weights:
 - Frame (excluding seatpost clamp): 1533g
 - Seatpost clamp: 23.3g
 - Fork: 318.3g
 - Crankset (unmodified cranks; including pinch bolts & end cap; excluding bottom bracket): 537.0g
 - Bottom bracket: 103.6g
 - Brake calipers: 389.7g/pair