If you want a decent hinge marking tool, Tetra makes an excellent one that is imported by Central Hobbies. It is constructed from metal and even works on tapered wings. It is the best hinge marking tool on the market.

Lets talk about some tools that really work!
1) I4C Products distributes a 1/4" drive, 2 to 36 in-pds tork wrench that is perfect for torking bolts on our model engines. It goes by the name Tork-It #36. I have had one for a little over a year and with this little gem I can ensure all of the bolts are torked to the same specs.

2) A non contact infared thermometer. Prices on these have come down considerably and they are great to check the head temp on your engine. I use it a lot in the shop to check what temp my covering iron is working at. You can pick them up now for as little as 25 to 30 dollars.

3) For a long time the only ball/hex drivers around were from Du-Bro. They were made with small hard to grip handles that are very hard on the fingers when you have a bunch of screws or bolts to drive. Trinity products and Ofna products have both released very nice hex drivers that have nice large handles and as an added bonus the tips are replaceable. You can by them in both standard and metric, individually or in sets. I have a complete set of the Trinity drivers and they are excellent quality tools.

4) If you have never tried a #11 scalpel blade in your hobby knife you don't know what you are missing. I won't use anything else for trimming covering. These blades are some kinda sharp and last a lot longer than the regular blades when used on covering. I get mine at a local medical supply store in lots of 100. These blades are made of a thinner material and won't hold up to you bearing down on the knife, stick to the regular #11 blades for that. But if you want super clean cuts for straight edges, designs or such try a scalpel blade, you won't regret it.