Mass of Things

7.0 g	loonie mean of 25, assorted years up to and including 2000
7.3 g	twonie mean of 23, assorted years up to and including 2000
15.5 g	CD std = 0.49 (n=25), typical pressed audio CD, with 'silk-screen' printing, assorted units up to year 2000
23.9 g	AA cell average of a few Duracell Alkaline units made about 2001
44.6 g	9V battery average of a few Duracell Alkaline units made about 2000
55.2 g	yo-yo "Canada Games PRO Top", wooden unit made in Sweden, with string
67 g	CD 'jewel' case with no paper/card inserts; one audio case, measured once
115 g	Calculator HP 15C with battery
119.6 g	Calculator HP 32S II with battery
240 g	Pocket Camera Nikon ZOOM 310 AF 35mm, with battery and film
246 g	Cordless Phone handset Nortel unit, made about 1996
275 g	Li-ion Camcorder Battery  (7.2V–4.05Ah) 1996 Sony unit; this is 106 Wh/kg (say at least 90 Wh/kg useable)
352.7 g	Pocket Camera Canon S10 digital, with memory card, backup cell, main rechargeable battery and wrist strap
403 g	ceramic coffee mug
471.4 g	440 ml Can of Beer average of two cans of Double Diamond in 2000 (471.3g & 471.5g)
1.00 kg	Sony TRV81 Hi-8 camcorder (less battery pack and tape)
2.75 kg	64th Edition CRC handbook
3.45 kg	IBM ThinkPad 770 (CD-ROM drive loaded)