[Chrisper4694]

i hear ya, but you can actually make a nifty folding one with corrugated plastic board cut in strip sections with a bumper board sticker along it and some clear packing tape over the sections and you can fold it up and it weighs nothing. or attach two small pieces of hard material, wood, metal whatever in and 'L' shape and just attach your measuring tape to it when you want to measure. as long as the fish nose and the measuring tape tip are bumped up against something straight it'd be better than eyeballing it you know what i mean.

next best would be to lay the fish down in the center of the measuring tape no where near the tip and just use a straight edge to figure out it's exact length.

so many things effect the length in a picture it's tough.