As well as my prior post, this points out the necessity of doing an insurance review with your insurance agent. Make sure that your coverage is replacement value (not depreciated value, as they'll depreciate tools, equipment, and fixtures to nothing.) Also find out what it will cost to replace the building as well. not what you paid to build it.
Make sure you have 100% coverage! In some locations if you have 50% coverage, they pay 50% of your loss even if the loss is less than 50%! You must insure to the full value of the property, and add a bit more just in case.
But do a review with your agent (and this is why you don't normally buy insurance online, you really should have an agent who you can talk to.) If your agent doesn't understand the tools and equipment, have him/her contact the carrier, and confirm all is covered. Nothing ***** more than having a 200,000 loss, and finding you are only going to get 56K because of limits, low coverage, and failure to insure at replacement value!
A video of your home, and shop are vital, and store that tape in a different location, such as at work, or a safe-deposit box. If the tape burns, it is worthless. Best, make a bunch of tapes, keep one in the shop, one in the house, and give one to a relative who lives away from you. Use video tape, not DVDs, if possible, and if you use DVDs be sure to confirm they are still good every six months--DVDs do have a limited life. And make sure you have a way to play back the tapes! (Yea, I have four Sony 8-MM cameras, so I'm OK there...)
Oh, and don't trust a so-called fire proof safe if you buy it at a 'big box store'. Those consumer grade boxes are usually inferior and will fail in the event of a fire. I recommend if you use a safe, keep in it the basement, and put all documents and other water sensitive stuff in a fire resistant, water proof (say a glass jar with a metal cap) inside it. The basement (a corner location is best, that way two sides will have outside, cement, walls against it) will be the coolest location, but it will be flooded after a fire.
BTW, I agree with the other posters, even if you can clean up tools the odds are the temper is going to be gone, and they will not be usable.