Collection management 1 min read Collection Collection management Doug DeHaven February 2, 2023 As my collection expanded in size and diversity, I found it necessary to implement a systematic method...Read More
Monroe LA5-160 mechanical Calculator 2 min read Collection Monroe LA5-160 mechanical Calculator Doug DeHaven January 28, 2023 4 I recently picked up this broken Monroe LA5-160 Calculator for the collection, it was cheap for it...Read More
How a Gas pump nozzle works 2 min read Collection Projects How a Gas pump nozzle works Doug DeHaven January 28, 2023 Every want to know how a gas pump nozzle works? how it knows when to shut off?...Read More
A Pyranograph ( Solar output meter ) 3 min read Collection A Pyranograph ( Solar output meter ) Doug DeHaven January 16, 2023 Recently added to the collection is an old 1970’s Weather Measure Corp, Solar radiation recorder ( Pyranograph...Read More
1829 Henry Troemner No. 80 scale 1 min read Collection 1829 Henry Troemner No. 80 scale Doug DeHaven December 31, 2022 Just in to the collection is a 1829 Henry Troemner solution scale Model 80-B Almost 200 years...Read More
Massive Screw head 1 min read Collection Massive Screw head Doug DeHaven December 6, 2022 2 Found this recently on a bike ride in the woods, any idea what it may be? It...Read More
Worlds first magic marker? 1 min read Collection Worlds first magic marker? Doug DeHaven November 10, 2022 Worlds first magic marker, predates the sharpie! This marker was designed by Sidney Rosenthal, more on that...Read More
Electromechanical Aperture 1 min read Collection Electromechanical Aperture Doug DeHaven October 16, 2022 What a cool device, I explain more in detail in the video how something like this works,...Read More
OTTO BERNZ Vintage Blow torch Restoration 1 min read Collection Tools OTTO BERNZ Vintage Blow torch Restoration Doug DeHaven September 5, 2022 2 Been trying to find one of these cheap for some time, was able to hunt this one...Read More
Powhatan Type 250 Fire Hose Nozzle 1 min read Collection Projects Powhatan Type 250 Fire Hose Nozzle Doug DeHaven September 5, 2022 Picked this up for the lab, was a fun restoration. After a clean and blasting, it looks...Read More