Sikes Hydrometer, Serial # 16601 Owner: J.S. Donovan Complete Sikes Deluxe Hydrometer Kit 10 weights (9 shaft weights, 1 calibration cap), 1 float, 1 thermometer, 1 slide rule for temperature correction, 1 box. Maker : Buss FRONT OF CASE: SIKES' HYDROMETER ADJUSTED BY T. O. BLAKE 57, HATTON GARDEN, LONDON MAKER TO THE ADMIRALTY & CUSTOMS

BOTTOM OF CASE:

The bottom of the case bears 2 adhesive stickers, applied when the unit was calibrated. Below is a word for word translation of the last application.

57 Hatton Garden, London 26 Mch 20, E.C.I. We have this day adjusted Hydrometer No. 16601 enclosed in this case and it agrees with our Kew Certified Standards. To keep it in this state of adjustment for the longest possible time, the following points should be observed: Carefully wipe the instrument on a soft pref- erably silk cloth, after use. Don't use pressure. Don't replace in case whilst wet. In the event of Thermometer being broken in the case, re- move instrument from it and don't replace it therein, until case has been relined. Don't leave thermometer in case when forwarding by carrier, pack same seperately. T.O. Blake

The sticker visible now actually covers up an older one. While it appears to be a duplicate (from an earlier time), not the one small difference in the address, where this is 58 Hatton Garden and the later is 57 Hatton Garden.

The Slide Rule The Slide Rule has 2 distinct reading types on either side of the rule. This particular rule is in great condition, every portion readable, but fairly sticky. Click on either image to see a large, full detail picture.

The Weights The complete weight set with the top cap, and nine numbered weights labelled 10, 20, 30, 40, 50, 60, 70, 80, 90. - All weights bear the original 16601 serial number. Click on the image for a large, full detail picture.

The Float The shaft is marked with 10 main increments ranging from 0 to 10, with 4 side markers between each main marker, for a 0.2 accuracy between marks. Every mark is readable. The bottom shaft contains the Hydrometer's serial number stamp of 16601. Note that the top shaft of this particular hydrometer, on the thin side, is also stamped with the calibrator's name. Click on either image to see a large, full detail picture.

The Thermometer The thermometer measures degrees Fahrenheit from 25 degrees to 105 degrees. This is a mercury thermometer, with an ivory back. This thermometer is in working condition and at the time the scan was taken, if you look close enough at the detail picture you can see it is reading 74 degrees. Click on the image to see a large, full detail picture. Back to JD's Collection Page