Lot of Vintage Laboratory Hydrometers. Condition is "Used". The shorter ones are manufactured by Kimble Glass Co. Toledo OH.One is Type I Float No. 5111-S4 Range 1040-1280. Other one is Type III Float No. 5111-S3 Range 1180-1400. They are approx. 4 1/2" long. There are (3) manufactured by Durac Hydrometers Philadelphia PA. Each are about 7 1/2" long. Ranges on the units are as follows; 1.0-8.5, .75-.8, .85-.9. The longest ones are about 12" and 3/4" at widest point. One ranges from 800-900 and the other from 900 to 1000. Please ask questions or request additional pictures if more information is needed.