Watermark
SeaSoft Scuba develops new, creative, and imaginative diving equipment that withstand the test of time and are loved by divers worldwide. Our products increase your enjoyment, comfort and safety while exploring the wonders of the underwater world.
http://www.watermark1.com/

Wheel Weights International
Manufactures wheel balancing weights of any standard size of coated and uncoated, clip-on and adhesive.
http://www.wheelweightsintl.com/

Test Weights
Sales, service, and design of custom and standard calibration weights. Let us take the worry and hassle out of calibration by putting the responsibility in our hands.
http://www.testweights.com

Sash Weights
Manufactures lead sash weights and supplies.
http://mysite.wanadoo-members.co.uk/sashweights/

Mars Metal Company
Offers specialty lead casting including counterweights, weights, nuclear and medical radiation shielding, lead bricks, lead sheet, lead shot, anodes, ballast, keels, downrigger weights and ballast.
http://www.marsmetal.com/

English Weights and Measures
English weights & measures: History, Current usage etc.
http://home.clara.net/brianp/index.html

misc.fitness.weights
misc.fitness.weights faq links and resources
http://www.trygve.com/mfw_faq.html

Jagbags
Jagbags makers of silk sleeping bag liners in two weights of silk, Moneybelts, silk Travel ,Hostel and Bed sheets,customize your silk liner, IGF elixir, deer velvet.
http://www.jagbags.co.nz/

Applets for Prime Numbers
Factorization and weights of Proth coefficients.
http://www.brennen.net/primes/

MegaConverter
Best Place to Figure What Equals What. megaConverter is THE resource for units, weights, measures, calculators and converters.
http://www.megaconverter.com/